It's annoying to get thrown out of Approval in several cases; but some cases are valid. Either way, what can be further annoying is not having Code Collaborator indicate any information in the code r...
Somewhat like tlhobbes described, but applied to the top level review page, when a user clicks the Send to Rework/Complete button, I think it should log that to the Overall chat box. If you're curious about this information, it's then available even after different changes might be uploaded.
The first response by tlhobbes to his own request does seem to address the basic problem though. There's an undocument (maybe just poorly documented?) feature that clicking the checkmark button on the File-specific Overall will mark that file as "approved" and effectively operates as a bookmark of the last file state an individual reviewer has looked at. Doing this does create a log on the File-specific Overall of the reviewer's name, and that they "accepted" it.