migrate.py: Set hkid TO WLNO

wgmaster/migrate.py

@@ -480,6 +480,9 @@ def lookup_hkid(kgnr: Optional[int], qualid: str) -> str:
             hkid = 'WLXX'
         elif hkid[:2] in ('WL', 'BL', 'SL'):
             hkid = hkid[:2] + 'XX'
+    else:
+        if hkid.startswith('WL') and not hkid.endswith('XX'):
+            hkid = 'WLNO'
     return hkid