I have a song project I have been working on for a few months now. It contained a vocal track, a back up vocal track, a 6 string guitar track, a bass and bass buss track as well as a saturated bass track to punch through the mix a bit.along with multiple MT-Power Drum kit tracks separating out each drum kit piece. Every thing was fine 1/2/19 when I sent my master to a friend to get his input on the mix. I opened the song back up on 1/5/19 and all I can get to play back is the bass and drum tracks. Nothing is muted different than it was when I closed it on 1/2/19 (have some automation for that on some tracks). No signal shows at all in the console on the vocal, back up vocals and 6 string tracks. When I use the listen tool on the wave from for these tracks, I still just get bass and drums. Double checked my sends as well as inputs, nothing changed there. Tried restoring a prior version, no change, loaded a different song entirely and everything is fine on that one. Tried restarting my PC as well as SI multiple times, no change.
Any suggestions would be appreciated.