Great, thank you for looking into that ;)
I was able to fix the issue by deleting the registry entry for 3Dnes and just letting 3Dnes detect the controller again, but of course this is a sloppy fix lol.
V188.8.131.52 has just been released to fix this bug. Thank you for the bug report!
Man, you work fast! I tested the new version and the remapping works perfectly! Great work as usual, thank you! :)