Hi Ben — working on avid here on longer form projects, but my best practice advice is to keep a folder of past versions of your sequence (v1, v2, v3, v4) and also notate when a version has been submitted to a client (v1, v2, v3 rough cut review, v4, v5, v6 fine cut review). That way you have backups of your interim edits, and also a record of exactly what edit the client reviewed. When going through client timecode notes, I can have the review sequence in the source monitor for timecode reference while I work on the new version. Since I’m often rearranging entire story bits, adding shots, removing shots, I can’t simply leave gaps in the sequence to preserve the timecode, so being able to jump back and forth between versions is essential.