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I may make some changes to the mp3 tags like update artist track number etc and then close the file and reopen it and all the work I did to the lyrics and timestamps is gone
Right. Because whatever tag editor you're using is wiping out the lyric. Bad editor, go to your room.
It's possible that your editor might have a "preserve existing frames" setting that you merely need to activate, and this problem will go away.
Quote:
Is it possible that when you click save that there be a temp txt file your plugin uses to save them to that as well so if this happens I could click a recover last lyrics or something?
Yes, this feature exists. It's called "sumbit to lrcdb". That's where the temp txt file is saved: On the lrcdb site.