So i got impatient waiting for the ps4 release so got it on xbox one to make the time go quicker. So i have a altar of ymir and have just learned the next one. How do i upgrade . something happened to my original now its gone. But i cant seem to build the level 2 one. Do i need the original to build over
Yes I do believe so.
The upgrade installs from inside the Alters inventory.
Original Is in your inventory with other building options.
If you build the next tier altar inside the existing altar, it automatically upgrades.