Fix logic error in relations export

Do not reset the persisted reference to the CurrentDB when retrieving the relation objects from the database. The "modified only" and "all objects" cached items both share the same parent reference to the current DB. If we reassign the CurrentDB reference, it will invalidate the object references of the previously assigned relation objects.

Version Control.accda.src/modules/clsDbRelation.cls

@@ -37,6 +37,7 @@ Implements IDbComponent
 '---------------------------------------------------------------------------------------
 '
 Private Sub Class_Terminate()
+    Set m_Relation = Nothing
     Set m_Dbs = Nothing
 End Sub
 
@@ -93,7 +94,7 @@ Private Sub IDbComponent_Import(strFile As String)
 
         ' Relationships create indexes, so we need to make sure an index
         ' with this name doesn't already exist. (Also check to be sure that
-        ' we don't already have a relationship with this name.
+        ' we don't already have a relationship with this name.)
         If DebugMode(True) Then On Error Resume Next Else On Error Resume Next
         With m_Dbs
             .TableDefs(rel.Table).Indexes.Delete rel.Name
@@ -168,7 +169,7 @@ Private Function IDbComponent_GetAllFromDB(Optional blnModifiedOnly As Boolean =
         ' Maintain persistent reference to database object so we don't
         ' lose the reference to the relation object with this procedure
         ' goes out of scope. (Make sure we release this on termination)
-        Set m_Dbs = CurrentDb
+        If m_Dbs Is Nothing Then Set m_Dbs = CurrentDb
 
         Set m_Items(blnModifiedOnly) = New Dictionary
         For Each rel In m_Dbs.Relations