No, it shouldn't cause any problem. In general, modifing a table structure in the later version of VFP will not change table type as long as no new features introduced in later versions are used.
>I think this is ok, but am not sure.
>
>We have a client running an application written in VFP 6 and we need to make some basic structure changes to some of the tables. They are remote, and the tables are too big to download. They have VFP 7, so we can dial in and modify the structures using VFP 7. Would this cause any problems afterwards running the VFP 6 application?
--sb--