Are you using the "SET RELATION TO..." command to relate the tables? If so, it sounds as if you are re-selecting the parent table. When you change the record, or when you select another table and then return to the parent table the record pointer automatically returns to the top of the child table.

Barbara

>I have tow related (1 to many) tables on a form with a grid for each.
>
>When I scroll on the parent grid the record on the child should react to display only the related records.
>
>But when I scroll down on the parent it behaves in a wired manner. It does not scroll all the records after a few records it goes back to the top and starts again.
>
>Does any one have any idea why???