Yeah but, how did Upward Ever Upward end up being (not exact figures here) a C2 in NSW and then a C7 when crossing the border south? Again, Victoria may have backflipped I don't know but to get that situation in the first place tells me Victoria/Individual states keep their own records.
Also, QLD horses were racing for $10'000 and Perth upped the Metro penalty to $13K or something. There was a mass exodus of horses from QLD to WA because nice M2 horses were suddenly M0s.