think you’ve basically answered you own question. the only way is to edit the midi channels used on a copy of that tsi, using that XM app would make it much quicker/easier i’m sure.
or use something like bomes and virtual midi ports that would sit between traktor and your controller to translate to the new midi channels.
I wonder if anyone that has it would mind doing this? If you can just select all the mappings and change the channel then it should be a 60 second job.
I am currently using a midi router app, but would prefer to not have to use this!