Reviving this. I have the newest version of the Windows 10 app, just downloaded and installed. I've been using the old non-app version, but I wanted to try this again.

I've confirmed that the files that stay behind are actual working files and not cached names that aren't really there. The files ...

I just installed the latest update to 4.7.5 this afternoon. I have the paid version. What happens is that I go to rename files and, while it renames and copies them to the correct directories, it also doesn't delete the original files. I have to delete them manually myself.

Just in case anyone is ...