Actual I try to export possible candidates and import them in the content session. As I never export all pictures mostly I miss some. I have of course all pictures as a generated jpg available, but for different contents I need very often different formats and different prparation. So I need a form to move the edited RAW fast from one session to my content selection.
Did you try using EIP package? Capture One can pack RAW file and all adjustments, masks, color profiles, LCC corrections and metadata into one package you can easily move/copy to other sessions without worrying about losing sidecars with your edits.