Install Update from Microsoft Store?

I’ve been playing AoE:DE off my hard drive for a while now. I’m getting the message about upgrading through the Microsoft Store. When I go to the store, the only option I am offered is to “Install” not “Update” as I would expect. I would like to know if installing will create a new instance of the game and how to maintain my campaign progress if it does. Thank you.

This post may be ignored. I made a new post that accurately describes my issue.