"Re-boxing" is rather common in the aftermarket, but also selectively done, as well as selectively allowed by different distributor customers. Its a way to take over competitor's inventory that is pre-determined (by interchange lists) what's basically an equal product -- in most applications -- between various manufacturere. However, that can be questionable, and... mis-packaging occasionally happens. The aftermarket industry has its risks whenever reboxing occurs -- some of the better known manufacturers will not do it, yet some others do it often.