Ive been having a play with this today as I finally have some “Down time” and with a vocal mic plugged into Channel 12 I cannot replicate this when recording again.
Setup->Output Patch->USB Audio
Did you assume this was 1:1 mapped to the input channels? This could have changed.
It is definitely mapped 1:1.
Or if it was recorded onto a hard disc or fast USB stick, it would be weird indeed
Yes, it recorded like this originally to my SanDisk Extreme USB 3.0 64GB stick. (Which I had freshly reformatted).
The only thing we did any different at this gig was to set up the ALT OUT.
Anyone got any further thoughts before I just hope to God that this doesnt happen again?