If you are on a Mac, I’ve found software which will allow one to easily make batch changes to a set of photos to allow PhotoLab 5 to edit Z9 files as Z7 II files. It’s called MetaImage and it’s very easy to use.
MetaImage also works to change iPhone 11 Pro RAW photos to iPhone X designation and edit them. I’ve tested with RAW photos from iOS 13 and have not tested with iOS 14 or 15 yet.
You can buy MetaImage for $3 on sale now along with some other useful software (out of what’s available in the current Award-Winning Bundle, I own and recommend Little Snitch, iMazing, Typinator, HazeOver, Cookie, Forkflit, EagleFiler, DropShare, TaskPaper; others I’m trying include from this bundle include FireTask Pro, OwlOCR Pro, PhotosRevive).