Been there done that ------------------ many times.

I just worked on a return this afternoon.  I print out client organizers on colored paper.  I was working on the return and had the organizer pulled apart putting copies of the relevant stuff behind the applicable pages.  Then I see another organizer with a few sheets of paper clipped together with it in the file wondering how in the world I got another clients information in with this file.  No reason to worry, it didn't belong to another client.  He didn't return the organizer last year so obviously felt that it was really need so he brought in the 2023 and 2024 organizers this year.