diff --git a/Elwig/App.xaml b/Elwig/App.xaml
index d8b5a5e..29d0516 100644
--- a/Elwig/App.xaml
+++ b/Elwig/App.xaml
@@ -11,17 +11,13 @@
         <DataTemplate x:Key="PostalDestTemplate">
             <StackPanel Orientation="Horizontal">
                 <TextBlock Text="{Binding Dest}"/>
-                <TextBlock Text=" ("/>
-                <TextBlock Text="{Binding Ort.Name}"/>
-                <TextBlock Text=")"/>
+                <TextBlock Text="{Binding Ort.Name, StringFormat='{} ({0})'}"/>
             </StackPanel>
         </DataTemplate>
         <DataTemplate x:Key="KgNrTemplate">
             <StackPanel Orientation="Horizontal">
                 <TextBlock Text="{Binding Name}"/>
-                <TextBlock Text=" ("/>
-                <TextBlock Text="{Binding KgNr}"/>
-                <TextBlock Text=")"/>
+                <TextBlock Text="{Binding KgNr, StringFormat='{} ({0:00000})'}"/>
             </StackPanel>
         </DataTemplate>
         <DataTemplate x:Key="MemberAdminNameTemplate">
diff --git a/Elwig/App.xaml.cs b/Elwig/App.xaml.cs
index ddda1b7..0d02224 100644
--- a/Elwig/App.xaml.cs
+++ b/Elwig/App.xaml.cs
@@ -58,19 +58,25 @@ namespace Elwig {
 
             Dictionary<string, (string, string, int?, string?, string?, string?, string?, string?)> branches = new();
             using (var ctx = new AppDbContext()) {
-                if (!ctx.Database.CanConnect()) {
-                    MessageBox.Show($"Invalid Database:\n\n{Config.DatabaseFile}", "Invalid Database", MessageBoxButton.OK, MessageBoxImage.Error);
-                    Shutdown();
-                    return;
-                } else {
-                    branches = ctx.Branches.ToDictionary(b => b.Name.ToLower(), b => (b.ZwstId, b.Name, b.PostalDest?.AtPlz?.Plz, b.PostalDest?.AtPlz?.Dest, b.Address, b.PhoneNr, b.FaxNr, b.MobileNr));
-                    try {
-                        Client = new(ctx);
-                    } catch (Exception e) {
-                        MessageBox.Show($"Fehler beim Laden der Mandantendaten:\n\n{e.Message}", "Fehler");
+                try {
+                    if (!ctx.Database.CanConnect()) {
+                        MessageBox.Show($"Invalid Database:\n\n{Config.DatabaseFile}", "Invalid Database", MessageBoxButton.OK, MessageBoxImage.Error);
                         Shutdown();
                         return;
+                    } else {
+                        branches = ctx.Branches.ToDictionary(b => b.Name.ToLower(), b => (b.ZwstId, b.Name, b.PostalDest?.AtPlz?.Plz, b.PostalDest?.AtPlz?.Dest, b.Address, b.PhoneNr, b.FaxNr, b.MobileNr));
+                        try {
+                            Client = new(ctx);
+                        } catch (Exception e) {
+                            MessageBox.Show($"Fehler beim Laden der Mandantendaten:\n\n{e.Message}", "Fehler", MessageBoxButton.OK, MessageBoxImage.Error);
+                            Shutdown();
+                            return;
+                        }
                     }
+                } catch (Exception e) {
+                    MessageBox.Show($"Invalid Database:\n\n{e.Message}", "Invalid Database", MessageBoxButton.OK, MessageBoxImage.Error);
+                    Shutdown();
+                    return;
                 }
             }
             Utils.RunBackground("HTML Initialization", () => Documents.Html.Init(PrintingReadyChanged));
diff --git a/Elwig/Helpers/AppDbContext.cs b/Elwig/Helpers/AppDbContext.cs
index 5cd372d..f57ca2e 100644
--- a/Elwig/Helpers/AppDbContext.cs
+++ b/Elwig/Helpers/AppDbContext.cs
@@ -28,11 +28,11 @@ namespace Elwig.Helpers {
         public DbSet<WineAttr> WineAttributes { get; private set; }
         public DbSet<WineCult> WineCultivations { get; private set; }
         public DbSet<Branch> Branches { get; private set; }
+        public DbSet<AreaComType> AreaCommitmentTypes { get; private set; }
         public DbSet<Member> Members { get; private set; }
         public DbSet<BillingAddr> BillingAddresses { get; private set; }
         public DbSet<MemberTelNr> MemberTelephoneNrs { get; private set; }
         public DbSet<AreaCom> AreaCommitments { get; private set; }
-        public DbSet<AreaComAttr> AreaCommitmentAttributes { get; private set; }
         public DbSet<Season> Seasons { get; private set; }
         public DbSet<Modifier> Modifiers { get; private set; }
         public DbSet<Delivery> Deliveries { get; private set; }
@@ -110,7 +110,7 @@ namespace Elwig.Helpers {
         public async Task<int> NextFbNr() {
             int c = await AreaCommitments.Select(ac => ac.FbNr).MinAsync();
             (await AreaCommitments.OrderBy(ac => ac.FbNr).Select(ac => ac.FbNr).ToListAsync())
-                .ForEach(a => { if (a <= c + 100) c = a; });
+                .ForEach(a => { if (a <= c + 1000) c = a; });
             return c + 1;
         }
 
diff --git a/Elwig/Models/AreaCom.cs b/Elwig/Models/AreaCom.cs
index aebc26e..2e3c157 100644
--- a/Elwig/Models/AreaCom.cs
+++ b/Elwig/Models/AreaCom.cs
@@ -1,7 +1,5 @@
 using Microsoft.EntityFrameworkCore;
-using System.Collections.Generic;
 using System.ComponentModel.DataAnnotations.Schema;
-using System.Linq;
 
 namespace Elwig.Models {
     [Table("area_commitment"), PrimaryKey("FbNr")]
@@ -12,8 +10,8 @@ namespace Elwig.Models {
         [Column("mgnr")]
         public int MgNr { get; set; }
 
-        [Column("sortid")]
-        public string SortId { get; set; }
+        [Column("vtrgid")]
+        public string VtrgId { get; set; }
 
         [Column("cultid")]
         public string CultId { get; set; }
@@ -42,8 +40,8 @@ namespace Elwig.Models {
         [ForeignKey("MgNr")]
         public virtual Member Member { get; private set; }
 
-        [ForeignKey("SortId")]
-        public virtual WineVar WineVar { get; private set; }
+        [ForeignKey("VtrgId")]
+        public virtual AreaComType AreaComType { get; private set; }
 
         [ForeignKey("CultId")]
         public virtual WineCult WineCult { get; private set; }
@@ -53,11 +51,5 @@ namespace Elwig.Models {
 
         [ForeignKey("KgNr, RdNr")]
         public virtual WbRd? Rd { get; private set; }
-
-        [InverseProperty("AreaCom")]
-        public virtual ISet<AreaComAttr> AttributeEntries { get; private set; }
-
-        [NotMapped]
-        public IEnumerable<WineAttr> Attributes => AttributeEntries.Select(e => e.WineAttr);
     }
 }
diff --git a/Elwig/Models/AreaComAttr.cs b/Elwig/Models/AreaComAttr.cs
deleted file mode 100644
index cdb7f08..0000000
--- a/Elwig/Models/AreaComAttr.cs
+++ /dev/null
@@ -1,19 +0,0 @@
-using Microsoft.EntityFrameworkCore;
-using System.ComponentModel.DataAnnotations.Schema;
-
-namespace Elwig.Models {
-    [Table("area_commitment_attribute"), PrimaryKey("FbNr", "AttrId")]
-    public class AreaComAttr {
-        [Column("fbnr")]
-        public int FbNr { get; set; }
-
-        [Column("attrid")]
-        public string AttrId { get; set; }
-
-        [ForeignKey("FbNr")]
-        public virtual AreaCom AreaCom { get; private set; }
-
-        [ForeignKey("AttrId")]
-        public virtual WineAttr WineAttr { get; private set; }
-    }
-}
diff --git a/Elwig/Models/AreaComType.cs b/Elwig/Models/AreaComType.cs
new file mode 100644
index 0000000..5043979
--- /dev/null
+++ b/Elwig/Models/AreaComType.cs
@@ -0,0 +1,50 @@
+using Microsoft.EntityFrameworkCore;
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace Elwig.Models {
+    [Table("area_commitment_type"), PrimaryKey("VtrgId"), Index("SortId", "AttrId1", "AttrId2", "Discriminator")]
+    public class AreaComType {
+        [Column("vtrgid")]
+        public string VtrgId { get; set; }
+
+        [Column("sortid")]
+        public string SortId { get; set; }
+
+        [Column("attrid_1")]
+        public string? AttrId1 { get; set; }
+
+        [Column("attrid_2")]
+        public string? AttrId2 { get; set; }
+
+        [Column("disc")]
+        public string? Discriminator { get; set; }
+
+        [Column("min_kg_per_ha")]
+        public int? MinKgPerHa { get; set; }
+
+        [Column("max_kg_per_ha")]
+        public int? MaxKgPerHa { get; set; }
+
+        [Column("penalty_amount")]
+        public double? PenaltyAmoutValue { get; set; }
+
+        [NotMapped]
+        public decimal? PenaltyAmount {
+            get => PenaltyAmoutValue != null ? (decimal)PenaltyAmoutValue : null;
+            set => PenaltyAmoutValue = value != null ? (double)value : null;
+        }
+
+        [ForeignKey("SortId")]
+        public virtual WineVar WineVar { get; private set; }
+
+        [ForeignKey("AttrId1")]
+        public virtual WineAttr? WineAttr1 { get; private set; }
+
+        [ForeignKey("AttrId2")]
+        public virtual WineAttr? WineAttr2 { get; private set; }
+
+        [NotMapped]
+        public string DisplayName => WineVar.Name + (WineAttr1 != null ? $" {WineAttr1.Name}" : "") +
+            (WineAttr2 != null ? $" {WineAttr2.Name}" : "") + (Discriminator != null ? $" ({Discriminator})" : "");
+    }
+}
diff --git a/Elwig/Models/Member.cs b/Elwig/Models/Member.cs
index c021a51..f523c10 100644
--- a/Elwig/Models/Member.cs
+++ b/Elwig/Models/Member.cs
@@ -110,6 +110,9 @@ namespace Elwig.Models {
         [Column("active")]
         public bool IsActive { get; set; }
 
+        [Column("deceased")]
+        public bool IsDeceased { get; set; }
+
         [Column("iban")]
         public string? Iban { get; set; }
 
diff --git a/Elwig/Windows/AreaComAdminWindow.xaml b/Elwig/Windows/AreaComAdminWindow.xaml
index 223e391..93592c5 100644
--- a/Elwig/Windows/AreaComAdminWindow.xaml
+++ b/Elwig/Windows/AreaComAdminWindow.xaml
@@ -47,9 +47,8 @@
     <Grid>
         <Grid.RowDefinitions>
             <RowDefinition Height="19"/>
-            <RowDefinition Height="110"/>
-            <RowDefinition Height="175"/>
-            <RowDefinition Height="1*"/>
+            <RowDefinition Height="*"/>
+            <RowDefinition Height="*"/>
         </Grid.RowDefinitions>
         <Grid.ColumnDefinitions>
             <ColumnDefinition Width="*"/>
@@ -60,7 +59,7 @@
             <MenuItem Header="Flächenbindugen"/>
         </Menu>
 
-        <Grid Grid.RowSpan="3" Grid.Row="1" Grid.Column="0">
+        <Grid Grid.RowSpan="2" Grid.Row="1" Grid.Column="0">
             <Grid.ColumnDefinitions>
                 <ColumnDefinition Width="1*"/>
                 <ColumnDefinition Width="1*"/>
@@ -69,38 +68,44 @@
 
             <DataGrid x:Name="AreaCommitmentList" AutoGenerateColumns="False" HeadersVisibility="Column" IsReadOnly="True" GridLinesVisibility="None" SelectionMode="Single"
                   CanUserDeleteRows="False" CanUserResizeRows="False" CanUserAddRows="False" SelectionChanged="AreaCommitmentList_SelectionChanged" Grid.Column="0" Grid.Row="1"
-                  Margin="5,10,5,47" FontSize="14" Grid.ColumnSpan="3" Background="#e2e2e2">
+                  Margin="5,10,5,42" FontSize="14" Grid.ColumnSpan="3" Background="#e2e2e2">
                 <DataGrid.Columns>
-                    <DataGridTextColumn Header="FbNr"               Binding="{Binding FbNr}"          Width="2*"/>
+                    <DataGridTextColumn Header="FbNr."              Binding="{Binding FbNr}"          Width="2*"/>
                     <DataGridTextColumn Header="Katastralgemeinde"  Binding="{Binding Kg.AtKg.Name}"  Width="6*"/>
                     <DataGridTextColumn Header="Ried"               Binding="{Binding Rd.Name}"       Width="4*"/>
                     <DataGridTextColumn Header="Parzelle"           Binding="{Binding GstNr}"         Width="4*"/>
-                    <DataGridTextColumn Header="Fläche (m²)"             Binding="{Binding Area}"     Width="4*"/>
+                    <DataGridTextColumn Header="Fläche"             Binding="{Binding Area, StringFormat='{}{0:N0} m²'}" Width="4*">
+                        <DataGridTextColumn.CellStyle>
+                            <Style>
+                                <Setter Property="TextBlock.TextAlignment" Value="Right"/>
+                            </Style>
+                        </DataGridTextColumn.CellStyle>
+                    </DataGridTextColumn>
                 </DataGrid.Columns>
             </DataGrid>
 
             <Button x:Name="NewAreaCommitmentButton" Content="Neu" Click="NewAreaCommitmentButton_Click"
-                    HorizontalAlignment="Stretch" VerticalAlignment="Bottom" Margin="5,10,5,10" Grid.Column="0"/>
+                    HorizontalAlignment="Stretch" VerticalAlignment="Bottom" Margin="5,5,2.5,10" Grid.Column="0"/>
             <Button x:Name="EditAreaCommitmentButton" Content="Bearbeiten" Click="EditAreaCommitmentButton_Click" IsEnabled="False"
-                    HorizontalAlignment="Stretch" VerticalAlignment="Bottom" Margin="5,10,5,10" Grid.Column="1"/>
+                    HorizontalAlignment="Stretch" VerticalAlignment="Bottom" Margin="2.5,5,2.5,10" Grid.Column="1"/>
             <Button x:Name="DeleteAreaCommitmentButton" Content="Löschen" Click="DeleteAreaCommitmentButton_Click" IsEnabled="False"
-                    HorizontalAlignment="Stretch" VerticalAlignment="Bottom" Margin="5,10,5,10" Grid.Column="2"/>
+                    HorizontalAlignment="Stretch" VerticalAlignment="Bottom" Margin="2.5,5,5,10" Grid.Column="2"/>
 
             <Button x:Name="AreaCommitmentSaveButton" Content="Speichern" Click="AreaCommitmentSaveButton_Click" IsEnabled="False" Visibility="Hidden"
-                    HorizontalAlignment="Stretch" VerticalAlignment="Bottom" Margin="5,10,5,10" Grid.Column="0"/>
+                    HorizontalAlignment="Stretch" VerticalAlignment="Bottom" Margin="5,5,2.5,10" Grid.Column="0"/>
             <Button x:Name="AreaCommitmentResetButton" Content="Zurücksetzen" Click="AreaCommitmentResetButton_Click" IsEnabled="False" Visibility="Hidden"
-                    HorizontalAlignment="Stretch" VerticalAlignment="Bottom" Margin="5,10,5,10" Grid.Column="1"/>
+                    HorizontalAlignment="Stretch" VerticalAlignment="Bottom" Margin="2.5,5,2.5,10" Grid.Column="1"/>
             <Button x:Name="AreaCommitmentCancelButton" Content="Abbrechen" Click="AreaCommitmentCancelButton_Click" IsEnabled="False" Visibility="Hidden" IsCancel="True"
-                    HorizontalAlignment="Stretch" VerticalAlignment="Bottom" Margin="5,10,5,10" Grid.Column="2"/>
+                    HorizontalAlignment="Stretch" VerticalAlignment="Bottom" Margin="2.5,5,5,10" Grid.Column="2"/>
         </Grid>
 
         <GroupBox Header="Vertrag" Grid.Column="2" Grid.Row="1" Grid.RowSpan="1" Margin="5,5,5,5">
             <Grid>
                 <Grid.ColumnDefinitions>
-                    <ColumnDefinition Width="60"/>
-                    <ColumnDefinition Width="70"/>
+                    <ColumnDefinition Width="80"/>
+                    <ColumnDefinition Width="*"/>
                     <ColumnDefinition Width="50"/>
-                    <ColumnDefinition Width="100"/>
+                    <ColumnDefinition Width="*"/>
                 </Grid.ColumnDefinitions>
 
                 <Label Content="FbNr.:" Margin="10,10,0,0" Grid.Column="0"/>
@@ -108,67 +113,51 @@
                          TextChanged="FbNrInput_TextChanged" LostFocus="FbNrInput_LostFocus"/>
 
                 <Label Content="MgNr.:" Margin="10,40,0,0" Grid.Column="0"/>
-                <TextBox x:Name="MgNrInput" Margin="0,40,0,0" Width="48" Grid.Column="1" TextAlignment="Right" HorizontalAlignment="Left"/>
+                <TextBox x:Name="MgNrInput" IsEnabled="False"
+                         Margin="0,40,0,0" Width="48" Grid.Column="1" TextAlignment="Right" HorizontalAlignment="Left"/>
 
                 <Label Content="Von:" Margin="10,10,0,0" Grid.Column="2"/>
-                <TextBox x:Name="YearFromInput" Margin="0,10,0,0" Width="100" Grid.Column="3" TextAlignment="Right" HorizontalAlignment="Left"
+                <TextBox x:Name="YearFromInput" Margin="0,10,0,0" Width="41" Grid.Column="3" TextAlignment="Right" HorizontalAlignment="Left"
                          TextChanged="IntegerInput_TextChanged"/>
 
                 <Label Content="Bis:" Margin="10,40,0,0" Grid.Column="2"/>
-                <TextBox x:Name="YearToInput" Margin="0,40,0,0" Width="100" Grid.Column="3" TextAlignment="Right" HorizontalAlignment="Left"
+                <TextBox x:Name="YearToInput" Margin="0,40,0,0" Width="41" Grid.Column="3" TextAlignment="Right" HorizontalAlignment="Left"
                          TextChanged="IntegerInput_TextChanged"/>
+
+                <Label Content="Vertragsart:" Margin="10,70,0,0" Grid.Column="0" Grid.ColumnSpan="2"/>
+                <ComboBox x:Name="AreaComTypeInput" DisplayMemberPath="DisplayName" TextSearch.TextPath="DisplayName"
+                          HorizontalAlignment="Stretch" Margin="0,70,10,0" Grid.Column="1" Grid.ColumnSpan="3"/>
+
+                <Label Content="Bewirt.-Art:" Margin="10,100,0,0" Grid.Column="0" Grid.ColumnSpan="2"/>
+                <ComboBox x:Name="WineCultivationInput" DisplayMemberPath="Name" TextSearch.TextPath="Name"
+                          HorizontalAlignment="Stretch" Margin="0,100,10,0" Grid.Column="1" Grid.ColumnSpan="3"/>
             </Grid>
         </GroupBox>
 
-        <GroupBox Header="Lage" Grid.Column="2" Grid.Row="2" Grid.RowSpan="1" Margin="5,5,5,5">
+        <GroupBox Header="Lage" Grid.Column="2" Grid.Row="2" Grid.RowSpan="1" Margin="5,5,5,10">
             <Grid>
                 <Grid.ColumnDefinitions>
                     <ColumnDefinition Width="80"/>
                     <ColumnDefinition Width="*"/>
                 </Grid.ColumnDefinitions>
 
-                <Label Content="Gemeinde:" Margin="10,10,0,0" Grid.Column="0"/>
+                <Label Content="KG:" Margin="10,10,0,0" Grid.Column="0"/>
                 <ComboBox x:Name="KgInput" ItemTemplate="{StaticResource KgNrTemplate}" TextSearch.TextPath="Name"
-                          Width="200" HorizontalAlignment="Left" SelectionChanged="KgInput_SelectionChanged"
-                          Margin="0,10,10,0" Grid.Column="1"/>
+                          HorizontalAlignment="Stretch" Margin="0,10,10,0" Grid.Column="1"
+                          SelectionChanged="KgInput_SelectionChanged"/>
 
                 <Label Content="Ried:" Margin="10,40,0,0" Grid.Column="0"/>
                 <ComboBox x:Name="RdInput" DisplayMemberPath="Name" TextSearch.TextPath="Name"
-                          Width="200" HorizontalAlignment="Left"
-                          Margin="0,40,0,0" Grid.Column="1"/>
+                          HorizontalAlignment="Stretch" Margin="0,40,10,0" Grid.Column="1"/>
 
-                <Label Content="Parzelle:" Margin="10,70,0,0" Grid.Column="0"/>
-                <TextBox x:Name="GstNrInput" Margin="0,70,0,0" Width="200" Grid.Column="1" TextAlignment="Right" HorizontalAlignment="Left"
+                <Label Content="Parzelle(n):" Margin="10,70,0,0" Grid.Column="0"/>
+                <TextBox x:Name="GstNrInput" Margin="0,70,10,0" Grid.Column="1" HorizontalAlignment="Stretch"
                          TextChanged="GstNrInput_TextChanged" LostFocus="GstNrInput_LostFocus"/>
 
-                <Label Content="Fläche (m²):" Margin="10,100,0,0" Grid.Column="0"/>
+                <Label Content="Fläche:" Margin="10,100,0,0" Grid.Column="0"/>
                 <TextBox x:Name="AreaInput" Margin="0,100,0,0" Width="100" Grid.Column="1" TextAlignment="Right" HorizontalAlignment="Left"
                          TextChanged="IntegerInput_TextChanged"/>
             </Grid>
-
-        </GroupBox>
-
-        <GroupBox Header="Eigenschaften" Grid.Column="2" Grid.Row="3" Grid.RowSpan="1" Margin="5,5,5,5">
-            <Grid>
-                <Grid.ColumnDefinitions>
-                    <ColumnDefinition Width="80"/>
-                    <ColumnDefinition Width="*"/>
-                </Grid.ColumnDefinitions>
-
-                <Label Content="Sorte:" Margin="10,10,0,0" Grid.Column="0"/>
-                <ComboBox x:Name="WineVarietyInput" ItemTemplate="{StaticResource WineVarietyTemplate}" TextSearch.TextPath="Name"
-                          Width="200" HorizontalAlignment="Left"
-                          Margin="0,10,10,0" Grid.Column="1"/>
-
-                <Label Content="Attribute:" Margin="10,40,0,0" Grid.Column="0"/>
-                <xctk:CheckComboBox x:Name="AttributesInput" Grid.Column="1" Margin="0,40,0,0" IsEnabled="False"
-                                    ItemTemplate="{StaticResource WineAttributeTemplate}" Delimiter=", " AllItemsSelectedContent="Alle"
-                                    Width="200" HorizontalAlignment="Left" ItemSelectionChanged="AttributesInput_SelectionChanged"/>
-
-                <Label Content="Bewirt. Art:" Margin="10,70,0,0" Grid.Column="0"/>
-                <ComboBox x:Name="WineCultivationInput" DisplayMemberPath="Name" TextSearch.TextPath="Name"
-                          Width="200" HorizontalAlignment="Left" Margin="0,70,10,0" Grid.Column="1"/>
-            </Grid>
         </GroupBox>
     </Grid>
 </local:AdministrationWindow>
diff --git a/Elwig/Windows/AreaComAdminWindow.xaml.cs b/Elwig/Windows/AreaComAdminWindow.xaml.cs
index cae060a..f0329b8 100644
--- a/Elwig/Windows/AreaComAdminWindow.xaml.cs
+++ b/Elwig/Windows/AreaComAdminWindow.xaml.cs
@@ -25,12 +25,12 @@ namespace Elwig.Windows {
             };
             RequiredInputs = new Control[] {
                 FbNrInput, YearFromInput, KgInput,
-                GstNrInput, AreaInput, WineVarietyInput, WineCultivationInput
+                GstNrInput, AreaInput, AreaComTypeInput, WineCultivationInput
             };
         }
 
-        private async void Window_Loaded(object sender, RoutedEventArgs e) {
-            await RenewContext();
+        private void Window_Loaded(object sender, RoutedEventArgs e) {
+            LockInputs();
         }
 
         private async Task RefreshAreaCommitmentList() {
@@ -50,9 +50,7 @@ namespace Elwig.Windows {
 
         private void RefreshInputs(bool validate = false) {
             ClearInputStates();
-            AreaCom? a = (AreaCom)AreaCommitmentList.SelectedItem;
-
-            if (a != null) {
+            if (AreaCommitmentList.SelectedItem is AreaCom a) {
                 EditAreaCommitmentButton.IsEnabled = true;
                 DeleteAreaCommitmentButton.IsEnabled = true;
                 FillInputs(a);
@@ -60,11 +58,9 @@ namespace Elwig.Windows {
                 EditAreaCommitmentButton.IsEnabled = false;
                 DeleteAreaCommitmentButton.IsEnabled = false;
                 ClearOriginalValues();
-                ClearInputs();
-                AttributesInput.UnSelectAll();
-                MgNrInput.Text = "";
+                ClearInputs(validate);
+                ClearInputStates();
             }
-            if (!validate) ClearInputStates();
             GC.Collect();
         }
 
@@ -81,13 +77,7 @@ namespace Elwig.Windows {
             GstNrInput.Text = a.GstNr;
             AreaInput.Text = a.Area.ToString();
 
-            WineVarietyInput.SelectedItem = a.WineVar;
-
-            AttributesInput.UnSelectAll();
-            foreach (var attr in a.Attributes) {
-                AttributesInput.SelectedItems.Add(attr);
-            }
-
+            AreaComTypeInput.SelectedItem = a.AreaComType;
             WineCultivationInput.SelectedItem = a.WineCult;
 
             FillOriginalValues();
@@ -103,8 +93,7 @@ namespace Elwig.Windows {
         protected override async Task RenewContext() {
             await base.RenewContext();
             ControlUtils.RenewItemsSource(KgInput, await Context.WbKgs.Select(k => k.AtKg).OrderBy(k => k.Name).ToListAsync(), i => (i as AT_Kg)?.KgNr);
-            ControlUtils.RenewItemsSource(WineVarietyInput, await Context.WineVarieties.OrderBy(v => v.Name).ToListAsync(), i => (i as WineVar)?.SortId);
-            ControlUtils.RenewItemsSource(AttributesInput, await Context.WineAttributes.OrderBy(a => a.Name).ToListAsync(), i => (i as WineAttr)?.AttrId);
+            ControlUtils.RenewItemsSource(AreaComTypeInput, await Context.AreaCommitmentTypes.OrderBy(v => v.VtrgId).ToListAsync(), i => (i as AreaComType)?.VtrgId);
             ControlUtils.RenewItemsSource(WineCultivationInput, await Context.WineCultivations.OrderBy(c => c.Name).ToListAsync(), i => (i as WineCult)?.CultId);
             await RefreshAreaCommitmentList();
         }
@@ -116,7 +105,6 @@ namespace Elwig.Windows {
             HideAreaCommitmentNewEditDeleteButtons();
             ShowAreaCommitmentSaveResetCancelButtons();
             UnlockInputs();
-            AttributesInput.IsEnabled = true;
             InitInputs();
         }
 
@@ -130,7 +118,6 @@ namespace Elwig.Windows {
             HideAreaCommitmentNewEditDeleteButtons();
             ShowAreaCommitmentSaveResetCancelButtons();
             UnlockInputs();
-            AttributesInput.IsEnabled = true;
         }
 
         private async void DeleteAreaCommitmentButton_Click(object sender, RoutedEventArgs evt) {
@@ -139,7 +126,7 @@ namespace Elwig.Windows {
 
             var r = MessageBox.Show(
                 $"Soll die Flächenbindung {a.GstNr} ({a.Area} m²) wirklich unwiderruflich gelöscht werden?",
-                "Parzelle löschen", MessageBoxButton.YesNo, MessageBoxImage.Warning, MessageBoxResult.No);
+                "Flächenbindung löschen", MessageBoxButton.YesNo, MessageBoxImage.Warning, MessageBoxResult.No);
             if (r == MessageBoxResult.Yes) {
                 Context.Remove(a);
                 Context.SaveChanges();
@@ -156,8 +143,8 @@ namespace Elwig.Windows {
             a.RdNr = RdInput.SelectedItem.GetType() == typeof(NullItem) ? null : ((WbRd)RdInput.SelectedItem).RdNr;
             a.GstNr = GstNrInput.Text;
             a.Area = int.Parse(AreaInput.Text);
-            a.SortId = ((WineVar)WineVarietyInput.SelectedItem).SortId;
-            a.CultId = ((WineCult)WineCultivationInput.SelectedItem).CultId;
+            a.VtrgId = (AreaComTypeInput.SelectedItem as AreaComType)?.VtrgId;
+            a.CultId = (WineCultivationInput.SelectedItem as WineCult)?.CultId;
 
             EntityEntry<AreaCom>? tr = null;
             try {
@@ -168,23 +155,6 @@ namespace Elwig.Windows {
                     tr = (await Context.AddAsync(a));
                 }
 
-
-                foreach (WineAttr attr in a.Attributes) {
-                    if (!AttributesInput.SelectedItems.Contains(attr)) {
-                        var aca = a.AttributeEntries.FirstOrDefault(h => h.AttrId == attr.AttrId);
-                        Context.Remove(aca);
-                    }
-                }
-
-                foreach (WineAttr attr in AttributesInput.SelectedItems) {
-                    if (!a.Attributes.Contains(attr)) {
-                        AreaComAttr aca = Context.CreateProxy<AreaComAttr>();
-                        aca.FbNr = a.FbNr;
-                        aca.AttrId = attr.AttrId;
-                        await Context.AddAsync(aca);
-                    }
-                }
-
                 await Context.SaveChangesAsync();
 
                 if (newFbNr != a.FbNr) {
@@ -211,7 +181,6 @@ namespace Elwig.Windows {
             HideAreaCommitmentSaveResetCancelButtons();
             ShowAreaCommitmentNewEditDeleteButtons();
             LockInputs();
-            AttributesInput.IsEnabled = false;
             await RefreshAreaCommitmentList();
             AreaCommitmentList.SelectedItem = a;
         }
@@ -234,7 +203,6 @@ namespace Elwig.Windows {
             RefreshInputs();
             ClearInputStates();
             LockInputs();
-            AttributesInput.IsEnabled = false;
         }
 
         override protected void UpdateButtons() {
@@ -297,11 +265,13 @@ namespace Elwig.Windows {
         }
 
         private async void KgInput_SelectionChanged(object sender, SelectionChangedEventArgs evt) {
-            AT_Kg? curr_kg = (AT_Kg)KgInput.SelectedItem;
-            if (curr_kg != null) {
+            if (KgInput.SelectedItem is AT_Kg curr_kg) {
                 var rdList = await Context.WbRde.Where(r => r.KgNr == curr_kg.KgNr).OrderBy(r => r.Name).Cast<object>().ToListAsync();
                 rdList.Insert(0, new NullItem());
                 ControlUtils.RenewItemsSource(RdInput, rdList, i => (i as WbRd)?.RdNr);
+            } else {
+                var rdList = new object[] { new NullItem() };
+                ControlUtils.RenewItemsSource(RdInput, rdList, i => (i as WbRd)?.RdNr);
             }
             ComboBox_SelectionChanged(sender, evt);
         }