Earned value does not give results after adding resource data to original baseline (OPC)

Anybody have an Idea how I can solve this issue so I can have a valid EV-analysis compared to my (updated) original baseline schedule?

Context:
I have a project with an original baseline that has NO resources/cost loading assigned. When the baseline schedule was created, the information was not yet available, but the project already started.
At the moment, I have a current schedule (with progress that is significantly different from the baseline) that has been cost loaded.

Goal: I'd like to have the cost loading in the original baseline and have my current schedule show me the EV-calculations compared to the original baseline.