We'll see if somebody can hazard a guess. I'm beginning to think that I've done something quite odd to cause this. Oh, well.

>>Yes, there is a ORDER clause ... which was in my original code (that code no longer exists).
>>
>>The files are opened outside of the form.
>>
>>Note that the relations actually work for each grid IF I click on that grid, but doing so causes the other grid's relations to fail.
>
>I don't know. They ought to be independent.