Been a while since I’ve dealt with something like this (used to own an HVX200) so I may be incorrect. But I believe FCP will only “remove advanced pulldown” on 24pa footage, not 24p (pa stands for pulldown advanced?). One of them encodes extra fields and the other extra frames, something like that from what I remember. So if you import your 1080i24p footage first without removing the extra frames, or extra fields, and edit at 1080i you’ll end up with a sequence that has extra fields/frames at random places rather than in a cadence throughout your show. Compressor supposedly can detect these and remove them but I’ve had varying success in the past. So if FCP can’t remove the pulldown when you ingest, you’d be better off doing a reverse telecine on all your footage to create true 1080p24 shots and then bringing those into FCP so you can edit at 24p.
It would probably be a good idea to check the 200’s manual, and FCP’s manual on ingesting different codecs (at the top of the screen under Help). It might give you some answers on how the camera and FCP are handling the 1080i24p footage. There is also a really good book called the “Missing Manual” that goes through and actually explains all the different settings in the 200, and there was a chapter on all the different resolution and framerate settings, how they worked, etc.