I noticed that there’s no longer the ability to save a map file as another name. That’s strange and really inconvenient.
Ahhh, I think they write-protected the Valley of the Ancient content. If you load that map and open the file menu, the Save Current Level As is missing, as well as the option to build a project. That’s really sad 
I wanted to build a copy for my friend who doesn’t have the editor/know how to use it.
Oh no, it looks like they just moved the packing/cooking of projects into the toolbar under the Platforms icon to the right of the Play button. Hooray!