Hi charity-chance,
I would suggest using the Preferences: Import and switching to Standard Physical, while leaving terms like trash out of this forum. OK!? Thank you.
https://help.maxon.net/c4d/2025/en-us/Default.htm#html/PREFSIMEXPORT-PREF_IMEXPORT_MAIN_GROUP.html#PREF_IMEXPORT_NODESPACE
Preferences> Import> Target
Screenshot 2025-07-30 at 11.18.08 AM.jpg
I tested this with a current Mixamo FBX, and it works just fine.
Take care.