>>This one:
>>
>>http://support.microsoft.com/default.aspx/kb/952548
>>
>>While it talks of BROWSE windows, does anyone know if this bug can manifest itself with grids?
>
>Browse is a grid. I.e. the browse command uses a grid internally to display its results.
>

Yes, I wasn't stating my question very well, was I ?

>I think this doesn't have much to do with grids per se, but with the buffers - the visible records in the child table somehow include the newly added records even if they shouldn't be visible. From what I understood that's what you'd see regardless of what you were using to display the records, as long as there's a parent and a child table... hmmm, does this assume an explicit Set Relation between them, and would the implicit relation set by relative expression set in the child grid have the same problem at all.
>

As far the implicit relation having the problem - yes, that is my case here. This a brain dead simple multiple use form with 3 tables in the DE, Keys, Parent, Child. It has one purpose - add child records, from 1 to ~10 maximum. If more than 1 record, I show a grid and prefill with what data I can, and turn the user loose. Ctrl-C and Ctrl-V are our friends and the users love it. This has worked fine through VFP7-9. Until SP2 this spring. If the problem was limited to display only, I could work around it. This bug corrupts data, and I'm trying to understand the full scope where it can manifest itself. Scary as hell, I'm telling you.

So, hotfix or revert to SP1 - that is the question. Neither appeals to me.