>>Any ideas why, or how to fix this? I guess using scripting.filesystem would do the trick, but I'm just curious to know what's going on and whether this can be prevented.
>
>https://www.berezniker.com/content/pages/visual-foxpro/copy-move-rename-file-preserving-destination-name-case

Thanks, that was just two lines change in my code.

I guess Fox itself is using some other call - but then, why does Windows (no, why DO Windows) have so many of them?