If you re-bid in an Auction, then Ticketmaster will use the time at which you placed your latest re-bid as your bid time, not the time at which you initially placed your bid or any other intervening bid times. For example, if you initially bid at 2:00, later submit a re-bid at 3:30 and a finally submit a re-bid at 4:15, then the time Ticketmaster will use when determining whether you have a winning bid will be the 4:15 re-bid time. If you re-bid in an Auction, then your previous bid in that Auction will no longer be valid.
Bids are ranked first by the amount bid per ticket. In case of a tie, bids are ranked by the time that the bids were placed, with earlier bids for the same amount receiving priority over later bids for the same amount. If other bidders later submit higher bids, your bid may be re-assigned to a lower Ticket Group or you may receive no tickets at all, depending on the quantities of tickets in those bids and in the Ticket Groups. If this happens, you may wish to re-bid with a higher price.