You can record a crossfader automation on the OT with a midi track, but the simplest is to assign a CC1-10 to CC48 on a midi track. Works with scenes too.
Record and play crossfader’s movements and scenes changes with midi tracks, with midi loopback :
Connect a midi cable between midi in and out
New project
Project > Midi > Channels > Autochannel = 1
Play a sample on track 1, set scene B
Midi mode > Set Track 1 Midi Note Setup > Channel 2, set CTRL1 CC1 = CC48
While in Midi mode, Hold RECORD and press PLAY to enter Live Recording mode, press RECORD or PLAY to stop recording
You can also record Scenes with CC55 and CC56
Didn…