diff --git a/Elwig/Helpers/Export/ElwigData.cs b/Elwig/Helpers/Export/ElwigData.cs
index 68129b5..9794780 100644
--- a/Elwig/Helpers/Export/ElwigData.cs
+++ b/Elwig/Helpers/Export/ElwigData.cs
@@ -39,6 +39,7 @@ namespace Elwig.Helpers.Export {
                 Dictionary<int, int> currentDids;
                 Dictionary<string, int> currentLsNrs;
                 Dictionary<int, List<WbRd>> currentWbRde;
+                Dictionary<int, AT_Kg> kgs;
 
                 using (var ctx = new AppDbContext()) {
                     branches = await ctx.Branches.ToDictionaryAsync(b => b.ZwstId);
@@ -50,6 +51,7 @@ namespace Elwig.Helpers.Export {
                     currentWbRde = await ctx.WbRde
                         .GroupBy(r => r.KgNr)
                         .ToDictionaryAsync(g => g.Key, g => g.ToList());
+                    kgs = await ctx.Katastralgemeinden.Include(k => k.WbKg).ToDictionaryAsync(k => k.KgNr);
                 }
 
                 var data = new List<(
@@ -101,9 +103,9 @@ namespace Elwig.Helpers.Export {
                         string? line;
                         while ((line = await reader.ReadLineAsync()) != null) {
                             var obj = JsonNode.Parse(line)!.AsObject();
-                            var (m, b, telNrs, emailAddrs) = obj.ToMember();
+                            var (m, b, telNrs, emailAddrs) = obj.ToMember(kgs);
                             r.Members.Add(m);
-                            if (b != null) data[^1].BillingAddresses.Add(b);
+                            if (b != null) r.BillingAddresses.Add(b);
                             r.TelephoneNumbers.AddRange(telNrs);
                             r.EmailAddresses.AddRange(emailAddrs);
                         }
@@ -115,9 +117,12 @@ namespace Elwig.Helpers.Export {
                         string? line;
                         while ((line = await reader.ReadLineAsync()) != null) {
                             var obj = JsonNode.Parse(line)!.AsObject();
-                            var (areaCom, wbrd) = obj.ToAreaCom(currentWbRde);
+                            var (areaCom, wbrd) = obj.ToAreaCom(kgs, currentWbRde);
                             r.AreaCommitments.Add(areaCom);
-                            if (wbrd != null) r.Riede.Add(wbrd);
+                            if (wbrd != null) {
+                                currentWbRde[wbrd.KgNr].Add(wbrd);
+                                r.Riede.Add(wbrd);
+                            }
                         }
                     }
 
@@ -223,6 +228,7 @@ namespace Elwig.Helpers.Export {
                         importedMembers.Add((meta.FileName, meta.ZwstId, meta.Device, n, o, members.Count - n - o, meta.MemberFilters));
                     }
                     if (areaCommitments.Count > 0) {
+                        ctx.AddRange(riede);
                         var imported = areaCommitments.Where(c => (importNewMembers && !duplicateMgNrs.Contains(c.MgNr)) || (importDuplicateMembers && duplicateMgNrs.Contains(c.MgNr))).ToList();
                         importedAreaComs.Add((meta.FileName, meta.ZwstId, meta.Device, imported.Count, areaCommitments.Count - imported.Count, meta.AreaComFilters));
                     }
@@ -457,12 +463,16 @@ namespace Elwig.Helpers.Export {
             };
         }
 
-        public static (Member, BillingAddr?, List<MemberTelNr>, List<MemberEmailAddr>) ToMember(this JsonNode json) {
+        public static (Member, BillingAddr?, List<MemberTelNr>, List<MemberEmailAddr>) ToMember(this JsonNode json, Dictionary<int, AT_Kg> kgs) {
             var mgnr = json["mgnr"]!.AsValue().GetValue<int>();
+            var kgnr = json["default_kgnr"]?.AsValue().GetValue<int>();
+            if (kgnr != null && !kgs.Values.Any(k => k.WbKg?.KgNr == kgnr)) {
+                throw new ArgumentException($"Für KG {(kgs.TryGetValue(kgnr.Value, out var k) ? k.Name : "?")} ({kgnr:00000}) ist noch keine Großlage festgelegt!\n(Stammdaten → Herkunftshierarchie)");
+            }
             return (new Member {
                 MgNr = mgnr,
                 PredecessorMgNr = json["predecessor_mgnr"]?.AsValue().GetValue<int>(),
-                Name = json["name"]!.AsValue().GetValue<string>(),
+                Name = json["name"]?.AsValue().GetValue<string>() ?? json["family_name"]!.AsValue().GetValue<string>(),
                 Prefix = json["prefix"]?.AsValue().GetValue<string>(),
                 GivenName = json["given_name"]?.AsValue().GetValue<string>(),
                 MiddleName = json["middle_names"]?.AsValue().GetValue<string>(),
@@ -488,7 +498,7 @@ namespace Elwig.Helpers.Export {
                 CountryNum = json["address"]!["country"]!.AsValue().GetValue<int>(),
                 PostalDestId = json["address"]!["postal_dest"]!.AsValue().GetValue<string>(),
                 Address = json["address"]!["address"]!.AsValue().GetValue<string>(),
-                DefaultKgNr = json["default_kgnr"]?.AsValue().GetValue<int>(),
+                DefaultKgNr = kgnr,
                 ContactViaPost = json["contact_postal"]?.AsValue().GetValue<bool>() ?? false,
                 ContactViaEmail = json["contact_email"]?.AsValue().GetValue<bool>() ?? false,
                 Comment = json["comment"]?.AsValue().GetValue<string>(),
@@ -528,13 +538,13 @@ namespace Elwig.Helpers.Export {
             };
         }
 
-        public static (AreaCom, WbRd?) ToAreaCom(this JsonNode json, Dictionary<int, List<WbRd>> riede) {
+        public static (AreaCom, WbRd?) ToAreaCom(this JsonNode json, Dictionary<int, AT_Kg> kgs, Dictionary<int, List<WbRd>> riede) {
             var kgnr = json["kgnr"]!.AsValue().GetValue<int>();
             var ried = json["ried"]?.AsValue().GetValue<string>();
             WbRd? rd = null;
             bool newRd = false;
             if (ried != null) {
-                var rde = riede[kgnr] ?? throw new ArgumentException($"KG {kgnr:00000} is no WbKg");
+                var rde = riede[kgnr] ?? throw new ArgumentException($"Für KG {(kgs.TryGetValue(kgnr, out var k) ? k.Name : "?")} ({kgnr:00000}) ist noch keine Großlage festgelegt!\n(Stammdaten → Herkunftshierarchie)");
                 rd = rde.FirstOrDefault(r => r.Name == ried);
                 if (rd == null) {
                     newRd = true;