Think I solved it. Stupid of me to leave it "working" for so long without periodically checking for updates. Updated filebot to latest version and seems ok now at least with a test on the tv shows.

I've been using this for few years now: filebot -script fn:amc --output "Z:/" --log-file amc.log --action move --conflict auto -non-strict --def music=y subtitles=en,el artwork=n "Z:/To Process/" --def deleteAfterExtract=y --def unsorted=y --def "seriesFormat=/TV Shows/{n}/{n}{\" - Season ${s.pad(2 ...