Ok then.

Kas needed to transfer some files from part "A" to part "B" on the server, and he was supposed to use file transfer system "A", but he used file transfer system "B" instead, which proved to be incompatiable, so when stuff like that happens, there are backup files, call them files "A2", and replace the messed up "A1" files with the "A2" files, so now he is back at square 1 with the "A2" files replacing the "A1" files.

I'm sorry I asked.