Nether Update Failed to Carry Over Into Worlds

On top of the Microsoft sign in constantly failing; I had an old Minecraft world that I updated from PS4 to the new edition. I have played the new edition copy for a bit but I have not once went to the nether. I attempted to go to the nether today, and of course I wasn't signed in to my Microsoft account, but I didn't notice any of the nether updates. The only thing I did see were the piglings. However, I tested a new creative world and it did have blue fire, the trees etc. Please allow us an option to reset the nether like in some previous versions.