Thanks for the reponse, Matt.
All our machines are on 9.0.6 currently.
The frame in CatDV reads it as 1920×1080 — and in the preview window the spanned MXF “metaclip” looks great. It just screws up as soon as I send it straight into FCP7. I get what was in the 2nd and 3rd picture above.
Here is a shot of the tech tab for this spanned MXF metaclip in question (it’s not just this one that does it, it’s any spanned MXF metaclip):

Thanks again for reading,
-Nick S.