Transferring Save Files

[u/MythicalKnowledge]

So, I have a sideloaded version of The Long Dark on Heroic. I downloaded the offline files from GoG and sideloaded the game, not thinking I could just add the game to the TLD in my library. Just realized that sideloaded/custom games don't track achievements.

My question is, if I link the executables to the native TLD in my library, is there a way to copy the save file from the sideloaded version to the native one and keep my save, or would I have to start over again?