Originally Posted by
brarrr
Tickets had gold upgrades applied... so couldn't do the change online. No agents were willing. oh well, just have to do another trip to kauai for thanksgiving

I frequently change itineraries online with guest upgrades applied. Then I email MP and get them reinstated. I suppose if you don't have additional gold upgrades to apply in the interim, you might not be able to secure the new upgrades. But you can absolutely revise upgraded itineraries online.