>>This is part of an application which utilizes a parent to child to multi-child relationship...there are other child views which are refreshed on other pages. Speed has not been an issue since VFP 5. I seem to have made the problem go away by re-entering the Control Source on 2 columns of the Grid (which are Defined Functions)...Why it now works, I haven't a clue.
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>Well, as you know, and specially when programming, if it ain't broken, don't fix it :-)

I apparently didn't reset the Grid column Control Source property properly.
The problem is that I have a Grid Column with a User Defined Function with a parameter (which is a Field value from a Parent Table). So I'm back to square one...the problem has NOT gone away. Interestingly, if I use the Function without the parameter the Grid refreshes properly.