I have an ongoing situation in the Tickets Sticky with a Diser right now who is currently trying to upgrade current WDW resort package tickets (10-day Hoppers) to AP.
The option does appear in MDX.
But, the problem is...
the guest ALSO wants to get a refund for purchased Memory Maker (as it is, of course, included in with the new AP.)
THAT part of the deal needs to be handled by a live CM (as far as I can tell.)
But, the REAL dilemma is that, even though the CORRECT "price bridged" upgrade price appears in MDX,
the guest has gone to multiple ticket CMs who have flatly told the guest that the value for
the package tickets is about $100 less than the "bridged" price
(for which we -and MDX- knows that the bridged price is the correct price.)
I've advised to keep seeking a trained CM and to show that CM the upgrade price in MDX.