One of my favorite commands in 2018x, 3DPart from Body, doesn't appear to be in 2021x. I scoured the "all commands" list, but I wasn't able to find it.

Was this command deprecated? Was it renamed? Should I be looking somewhere else to find this command?

If it was deprecated or removed, what's the replacement workflow to achieve the same outcome efficiently?

(I updated the title to give the "answer". Thanks again Gary!)