Timing Issue When Cutting in Multitrack

Hello. I am a podcast editor Audition 22.6 on my Apple MacBook Air. I am experiencing a very frustrating issue whereby the timing on my multitrack clips seems to be subtly shifting every time I save, quit and re-open Audition. I have edited a 2.5 hour episode with multiple tracks numerous times now and can't seem to figure out what's going on. I make hundreds of edits (ripple time delete) to remove 'ums', strange sounds etc. and some of those sounds have re-appeared, or at least a portion of them. The result is anything but a smooth listening experience. E.g. A person will start speaking but begin their sentence mid word. I'm not sure whether saving the session file is shifting the timing, or re-opening the session. I have used Audition for a decade and have never experienced this insanely frustrating issue. Any help or advice would be appreciated. My podcast is basically on hiatus until I can solve this.