When creating a new support ticket, the suggested environment still shows past support ticket environment URLs. My production environment URL is not even listed because the support ticket URLs are taking up most of the elements in the limited amount allowed in the list.
Hey Carls
What do you mean by "support tickets Environments"? on the main list of environments in Power platform Admin center, you should be able to see if the environments are listed as "MsftInvestigation". Are you refering to that kind of support environments?
BEst regards