Mankau does not give any clue about 0015/16 - that they could be assigned to B-0s was only my guess
That V8 was indeed 0010 is indirectly confirmed by 3./100 Bestands-Mldg. and GQM loss report.
My understanding is that original V7/8 build was not cancelled, only W.Nrn. were reassigned. Maybe there was no logic involved, only bureaucracy.
p.