I am working on a serious piece for studio and after I finished it completely, I found out to my dismay that I made a big mistake; I missed entered into the chorus incorrectly: one beat ahead.

Now how Can I correct this without repeating the whole thing?

If it was one measure, I would have inserted one measure very easily.. but it is one beat that needs to be inserted only on some of the tracks..

any ideas or suggestions?

thanks