Using Sculpt Mode for Shape Keys


I’d love to use Sculpt Mode for modeling of Shape Keys, but sculpting seems to be locked when I try this.

Am I doing something wrong, or is there a workaround?

The Shape Keys ➔ Join As Shapes option is gone in Blender 2.8, and Transfer Shape Key from a copy of the mesh doesn’t seem to do anything.

Any advice will be appreciated, thanks.

Never mind, I’ve found what I did wrong: you have to raise a Shape Key’s Value to 1 before starting to sculpt, or the mesh will keep showing the Basis shape key in Sculpt Mode.