I just realized I was supposed to set up a session in 24bit / 48K. I recorded in the default 41. Some audio and some midi. Should I start a new session in 48k and transfer all tracks to the new session (which I can't because of the audio) or exporting the current session mix to 48k would surfice? I'm to deliver some stems. Thanks

Unless you have a lot more tracking still to do, you might as well just finish the work at 44.1 and export at 48 when the time comes.

a6strng
I just realized I was supposed to set up a session in 24bit / 48K. I recorded in the default 41. Some audio and some midi. Should I start a new session in 48k and transfer all tracks to the new session (which I can't because of the audio) or exporting the current session mix to 48k would surfice? I'm to deliver some stems. Thanks

If they need the tracks in 48K, you can export the individual tracks by doing this (obviously setting the bit depth to 24 and sample rate to 48):
 
https://www.youtube.com/watch?v=CgksDktF3AU&feature=youtu.be&fbclid=IwAR0ewiNXyo3_vzWQIpG1M7MhU2F-grEkiSKKB5LuHXWDQ_4f92kMJjW6otw
 
 

Thanks for the advice. I'll just simply export stems to 48k and 24 bit. Next time i'll pay more attention!