Scale 2D Rig

Hi, we're using Unity 2021.1 with the 2D Animation Package and the PSB Importer.

Our Rigger rigged a few characters after which we discovered that the PSB itself has the wrong size. After resizing the original PSB file, the Rig of the character didn't adjust to the new size of the PSB.

Now we don't want to redo all the rigs every time we change a PSB file's size. Is there a way to scale a 2D rig's bones and mesh?

I've looked into getting and setting the bones of a sprite, but that data is not persistent, since unity saves it in the respective psb's meta file. Please help!