some URLs still worked, others did not I couldn't get any real pattern honestly

I had users logged into both domains today. I had some urls pointing to a suitelet that were hard coded in a search result with a target=“_blank” that failed. I made them relative and everything worked. I’m concerned about browser bookmarks failing but so far no issues there.

Anything hardcode most likely will break.. i think if your'e already in a netsuite account and go to something that has system.netsuite.com, itll try to resolve it to the domain you're currently on.. thats how i think its working