Someone on the patch note page posted a quick fix, it's not perfect but works. You'll basically have to plug it in manually like before. relightstandalone.xml it's just a renamed environment.xml if that helps. Other wise proshot would have to be edited to understand how to read from relights files.
"Tr3n3rO
12 hours ago
I found a other way to fix the Problem. I take the colorgrading and enviroment from the Standalone and put them into the Map and all work fine without any error."