project key change (not key signature)

Hi there!
Just wondering if I can change the project key- I've set the project key for Fm (by mistake) and change the project signature to Gm. But still project key is visible in Fm.

This could be confusing for other users- when uploading to the muse score as it is visible as a Fm, but in reality it is Gm.

Please don't guide me to the signature change, but explain how to change the key of the project.
Thanks!