>I thought a grid could only be based upon one table, or upon a view?
>
>That would mean basing the relation on the key fields inthe view (without aliases) rather than the underlying table fields.
>
>Or have I totally misunderstood what you were doing?
>
>
>This merits further explanation I think...

Yes, my grid has one record source. What I was talking about was the relation expression property which has a combined key A+B where A is coming from table A and B coming from table B. That was working in 3 but not in 5.