>Something wasn't sitting right with me on this, so I used a MSDN support incident (SRX011109604590 working with Ayax Vargas in the VB Data Group (there is no VFP group?)).

Sure there is. Jim Saunders would be out of a job if there weren't.

>It does:
>

>Index on transform(columna) tag columna
>

>What do you think?

I think it's a bug. I'm currently investigating.