only thing I can think of is your selection slipped from all to one
so it joined all the 198 clips end to end with audio under? the audio would stop way short
And the other thing I think of is that you opened up the multicamera sequence as a New Sequence From Clip, instead of Open in Timeline.
That would give you one long flat sequence, but 198 panels if you opened it in your multicamera monitor
ok found what i did wrong. I had "in point" clicked instead of "audio" man i was panicing! in point made it one big line. audio creates clip for each different set with different audio. whew!