Is there a way (or script) to bake in the smart sidebearings?

A batch “dumb-ify” if you will.

I’m wondering what the best way to do this would be without re-entering them manually.

Many glyphs share the same sidebearings. I want to lock in those values across multiple masters, but preferably not one at a time, and remove the connection to the inherited space value.

Check out (install from plugin manager if you don’t have them) mekkablue->spacing->remove metric keys

Just make sure metrics are updated if you want them to be so else it will just convert it to whatever value it is set at.

Perfect, thank you @gor.jious!