diff --git a/core/views/scans.py b/core/views/scans.py
index b998b27..a0e0446 100644
--- a/core/views/scans.py
+++ b/core/views/scans.py
@@ -86,17 +86,26 @@ def fillblankpeople(w):
                 # print(f' - {wp=} {nobody=}')
                 populatewallet(w)
 
-def is_cave(id):
+def is_cave(wallet, id):
+    if not id:
+        return False
     Gcavelookup = GetCaveLookup()
     id = id.strip("' []'")
     if id in Gcavelookup:
         return True
     else:
-        print(f" - Failed to find cave object from id <{id}>")
-        if id.lower() != "unknown" and id != "":
-            print(f" - adding <{id}> to pendingcaves.txt list")
-            add_cave_to_pending_list(id, f"Could not find id <{id}>")
-        return False
+        # Historic wallets used just 2 or 3 digits and were all 1623 area. So, just for these wallets, 
+        # assume it is 1623-xxx
+        if f"1623-{id}" in Gcavelookup:
+            print(f" - Should modify wallet {wallet} to us 1623- prefix for cave <{id}>")
+            Gcavelookup[id] = Gcavelookup[f"1623-{id}"] # restoring ambiguous alias
+            return True
+        else:
+            print(f" - Wallet {wallet} Failed to find cave object from id <{id}>")
+            if id.lower() != "unknown" and id != "":
+                print(f" - adding <{id}> to pendingcaves.txt list")
+                add_cave_to_pending_list(id, f"Wallet {wallet} - Could not find id <{id}>")
+            return False
 
 def fillblankothers(w):
     """This is on the way to having a many:many relationship between Caves and Wallets
@@ -113,17 +122,17 @@ def fillblankothers(w):
         if type(wcaveid) == list:
             for i in wcaveid:
                 i = i.strip("' []'")
-                if is_cave(i):
+                if is_cave(w,i):
                     w.caveobj = Gcavelookup[i] # just sets it to the last one found. nasty. bug waiting to happen
         elif wcaveid.find(',') != -1:
             # it's a list of cave ids as a string
             ids = wcaveid.split(',')
             for i in ids:
                 i = i.strip("' []'")
-                if is_cave(i):
+                if is_cave(w,i):
                     w.caveobj = Gcavelookup[i]  # just sets it to the last one found. nasty. bug waiting to happen     
         else:
-            if is_cave(wcaveid):
+            if is_cave(w,wcaveid):
                 w.caveobj = Gcavelookup[wcaveid.strip("' []'")]
    
                 
@@ -267,7 +276,7 @@ def cavewallets(request, caveid):
                 ids = cleanid.split(',')
                 for i in ids:
                     i = i.strip("' []'")
-                    if is_cave(i):
+                    if is_cave(z,i):
                         fcave = Gcavelookup[i.strip("' []'")]  # just sets it to the last one found. nasty. bug waiting to happen 
                 
             elif cleanid in Gcavelookup: