I'm glad I read this thread or at least the last several pages.
My wife and I are in the same boat (excuse the pun) as those whose login emails return messages that we don't exist. I've seen the suggested fixes, including one I got back to my online submission to Azamara, about just re-registering and taking it from there. I think I'll wait a little while longer for them to get this sorted out as we don't have anything currently booked and, after reading what's going on here, very glad that we don't.
I've been involved in my share of these kinds of IT migrations and it strikes me that the new software being utilized likely employed a conversion program of some sort to take the RCL data and convert it to the new format. Given that this has quite clearly gone badly off the rails, I have to agree with a few of the other comments that I've seen that there is likely considerable corrupt, missing, or just plain bad data coming across. It is unfortunate, just as it seems to be with just about every software change, that the planning seems to fall well short of the execution.
Further, it sounds like the ships have the correct information and that there doesn't seem to be issues in that regard. This mess shouldn't be a reflection on Azamara, either the shoreside or shipside service, as much as this is the IT behind the scenes.
Good luck to everybody getting all their issues resolved and getting back to what we all love to do and that's just sailing and enjoying ourselves. ๐ ๐ฅ