It has been fairly common practice for qualified repair shops and end users to pull seats from vehicles that have been in accidents for years and I have yet to find any legal precedent in the US or Canada that indicate a need for concern.
Inspection and replacement of prescribed parts prone to damage and known one time use parts (like hold down bolts) should be straight forward, though I know it's a commonly skipped. I'm able to find other manufacturers prescribed post accident guidance (Honda lists replacement of SRS unit, Deployed side airbag(s), Front seat belt(s), Side impact sensor(s) (first+Seconds),B-pillar lower trim ,Seat frame and related parts) though I have not found RAM guidance. In my case since I have an undamaged vehicle so retaining items from the current vehicle addresses most concerns should be fairly straight forward.
Seat covers and airbags are still a common area of confusion. The discussions in
this link talk about the matter of seam repair from the POV of upholstery service providers. You can see how the discussions evolve in
later links like and importantly
use of OE replacement covers eliminates their concern of risk for insurers, dealers, and upholstery service providers.
