If I go to Disney's website and click on the upgrade policy it states:
Tickets Purchased Before 2005
You cannot upgrade tickets purchased before 2005. However, while older tickets cannot be upgraded, if an older ticket does not have an expiration date, the ticket remains valid until all admissions are used.
If it is within 14 days of a Disney Theme Park Ticket's first use and the ticket has remaining admissions, you are able to upgrade the ticket. If it is more than 14 days after first use or if no admissions remain, then a ticket may not be modified or upgraded
Given the status of Disney's website I have no idea if the verbiage posted by a PP is more or less current then what I quoted.
JMO Guests want to upgrade third party tickets to an AP. Disney could theoretically base the "trade in value" on the retail value of the ticket (bridge the value), what you paid
UT or what UT paid Disney.
Bridging the ticket is, in effect, giving the guest a discount on a ticket which isn't sold by authorized resellers. It makes no, logical, sense for Disney to indirectly allow UT to sell discounted AP through a continuation of "bridging" I know that's the way it's worked in the past but a lot has changed.
I tried to upgrade tickets bought through a cancelled COSTCO package on the phone on October 15. Couldn't be done on the phone. I was told they made a note of my request and I
ll be able to do the upgrade when I arrive.