Before I can get too excited about this, I would need to know the dates the 3 CoLBs were obtained. If the two with "Accepted" were both produced before BHO's then we still don't know if the difference in terminology is just a change made sometime after the first two were produced, and BHO's was produced.
OTOH, is one was produced before and one after BHO's, then we have a case. (Or if we can find another produced before at least one of those other two, which says "filed" )
You’re right, of course. This could just be a case of bureaucratic semantics.