I was making some tests with actions in a large amount of files (~4000), in order to move %band% to %albumartist% and start using %totaltracks%, among other operations. After a few actions I noted that from a certain file all my tags were shifted, except the cover arts. Saying in other words, all the tags from track 1 of an album were at track 2, the tags of track 2 were in track 3 and so on. Since the error started in one of the first albums I was working, now I have almost 4000 files with messed up tags. I don't have a clue about how this happened.
I would like to know if there is a way to make a script that let me copy the tag from one file to another, for example: copy tags from track 2 to track 1, then copy tags from track 3 to track 2 and so on. Or another exemple: copy %composer% from track "n" to track "n-1". Even this wouldn't completely solve my problem, since tags from last track of an album turned into first track of next album, but would help a lot.
I hope someone can help me, it would take so much work to correct all this mess by hand.
Thanks in advance,