Well, about my control assignment problem I found an easy remedy: I just emptied the newly created "F-86F Sabre" folder and restored the config files from a recent "F-86F" backup into that "F-86F Sabre" folder and voilà, I got my assignments back 🤓. Finally I also got rid of the (now useless?!) "F-86F" config input folder.
Btw, I wasn't aware about of other bugs in the Sabre, e.g. the ARN-6 switch and dial ... 😬🙄 but I hope that they will get fixed asap 🤨!
kuschmu's post in list of available maps and installation of a new map on the dedicated server was marked as the answer