What the hll did I touch?*
I have a project on the Octatrack configured (just like all the others), so that MIDI tracks 5, 6, 7, and 8 send MIDI to channels 5, 6, 7, and 8.
Everything was working normally, but at some point, channels 5, 6, and 7 stopped sending MIDI from the sequencer — only track 8 does. Even if it’s muted, track 8 keeps sending the sequence! So it ONLY sends via track 8 and it ALWAYS does 
However, if I activate the chromatic keyboard on the Octatrack, it sends the notes I play perfectly. It’s just the sequencer’s sequence that isn’t working.
It doesn’t get fixed if I switch to another part or bank. But if I load a new project (using the same template I always use), it works fine. So it’s definitely an issue with that specific project.
I’ve checked all the settings and nothing seems off. Just in case, I tried another synth (Blofeld instead of the Virus), but it behaves the same. The MIDI connection is direct Octa → Synth — nothing in between.
Any ideas? Because I’m going crazy here 
Thanks!