I just spoke to Ticketmaster again just now and explained my situation, which is same as Nniixx - where I bought 4 tix in my name (one presale code) and other in husband's name (one presale code).
I had to do 2 transactions, as I wanted mix of RZ and Res Seating, so have RZ x2 and Res Seat x2 = 4 tix limit (as per TM instructions) for ONE show, i.e. Perth. Did exact same on hubby's. As I had 2 valid presale codes, so 4 tix each, 8 total (as per entitlement per FAQs)
Ticketmaster said only if you have intentionally duplicated or exceeded 4 tix limit (max 8) they will cancel but will call t