I believe ACA was coming out of Melbourne during this time.
Not until May/June 2008, not in 2007, which was when these caps are from.
Eddie McGuire hosted ACA for a week in that time while Tracy was moving to Melbourne.
The whole set was moved down to Melbourne?
Indeed. This cap from a video I found on YouTube claims to be from July 23 2008, which was after the show moved to Melbourne permanently.
I believe it was coming out of Melbourne earlier than this date though. From a plasma from memory, until the set was shipped to Melbourne.
The main reason for the move was to do with Tracey’s mum being ill and needing care. They also capitalised on the show being made heavily in Melbourne (for Melbourne audience).