>>UPDATE. But it looks like it work correctly with SPARSE = .t. (default). Let me re-test.
>
>Regarding sparse, I obviously had a bad moment. Sparse must be .t., which sounds reasonable. I don't use VFP8 anymore, but I have it installed, so I tested it and it also worked fine.

Yes, I'm not sure why did I try to set it to .F. to introduce the problem in the first place and when spend time solving it.