Thank you for the report; it looks like the extension was migrated correctly but never officially released to our extension feed... I'll have someone release it ASAP

The FTP extension can help with this

I'm not sure the component we use to FTP supports negated wildcards, but you can simply add a Delete Files action before this that operates on *.config Alternatively (if you don't want to delete because you may re-use the files), you can use the Synchronize/Transfer Files action to a temporary directory (e.g. ~\Ftp) and use a !*.config mask on that to not transfer the configs, then use the FTP action from ~\Ftp as the source directory.

Wow, what an incredibly fast response. Thanks