CPO Question re: certifying a BMW that was in a crash

[desrste]

Before certifying a car does BMW (the actual dealer or BMW NA) run a check against the VIN to find out if it was ever in an accident? I would think that this would be important for them to know but cannot find out an official answer from BMW NA. I'm just trying to find out if they would have known if a car was involved in an accident before certifying it...not that it should not be certified, only if they would have known it's history.

Additionally, can a BMW be brought to a BMW dealership by another dealership (owned by the same franchise) to be certified and sold as a CPO car?

Thanks in advance for the replies.