So I downloaded my first game from GoG (Witcher 3), installed the game without Galaxy, played quite a bit of it, then decided to play it on Galaxy. Copied my gamesaves folder to desktop, uninstalled, reinstalled with Galaxy and put the gamesaves folder in the main Witcher Wild Hunt folder in Galaxy, but I see no saves when I load up the game. What am I doing wrong here? Should I have done something differently?

Savegames for Witcher 3 must be copied here: C:\Users\Username\Documents\The Witcher 3\

And just for information: You don't need to deinstall and install a game to add it to Galaxy. You can import the game.

== IMPORT ALREADY INSTALLED GAMES TO GALAXY ==

For GOG games installed using installers from the last few months (so called Galaxy-compatible installers)
Click the "+" button on top of the sidebar and select "scan and import folders" - it will find all compatible games within that folder and add them to the Client.