After I had closed and reopened Premiere, I found that clips from a source that had been giving me trouble throughout the entire project were no longer function, instead replaced with a loud buzzing after reopening. The audio track displayed as just a flat line, but it had done that prior to restart. Is there a way to recover this audio, so I don't have to re-trim the original raw footage?
Sorry about that. Try a match frame and call up the original clip in the Source Monitor. Then cut it back in with Clip > Replace with Clip, Source Monitor, Match Frame. If you set up a shortcut for that, this repair can go fairly quickly. Let me know if that works.