Have read about differences of the two here: https://learn.microsoft.com/en-us/azure/devops/project/wiki/provisioned-vs-published-wiki?view=azure-devops.
Would like to try out code as wiki, however, want to have a backup plan in case I want to switch back to the provisioned one.
Once I have tried the "published code as wiki" does anyone know how to import the contents from a repo backup and make it "provisioned one"?
If you have already created a project wiki and add a code wiki, the two wiki's will coexist (see screenshot):
If the Code wiki is not the way to go, you can unpublish it only leaving the project wiki in place.
If the Code wiki is the way to go, removing a provisioned (project) wiki doesn't seem to be an option in the UI. Still, there are options to Delete default project Wiki in Azure DevOps using the API.