Question about converting passes...

[kiddoc]

We have 6 day PHP passes right now but are thinking of purchasing a AP. Can we upgrade the passes we already have--they are unused--or do we have to buy a new AP outright?

 

[WDSearcher]

Yes, you can upgrade. They'll take the value of the pass you have and apply it to the pass you want.

You can always upgrade. You cannot, however, downgrade and receive a refund.