johnwillo: FYI, manual copies work. Cyberpunk 2077 save location on the Mac is:
/Users/<Your User>/Library/Application Support/CD Projekt Red/Cyberpunk 2077/saves
Unfortunately that's only a solution if you still have a local windows installation of Cyberpunkt2077 as I see no way to download my saves from the cloud. The cloud saves management UI only allows to delete saves - not to download a certain save file. And as Cloud Save is not activatable with MacOS yet Galaxy also doesn't offer to download those files either as far as I can see.
Maybe it's nevertheless a good idea to start from scratch after such a huge patch with lots of changes that might interfere with old data in older save games ... even if my last were from after installing Phantom Libertine.
Still: That I can't interchange saves between Windows and MacOS installations of a CDproject game via GOG Cloud - not to speak of not having the cloud save funktion with MacOS version of it at all - is a real downer. And I really hope that's just a temporary issue ...