Sorry for hijacking the thread but my issue is quite similar.
As of today I migrated from the GoG versio to the Steam one and had succesfully followed the guide for the save file migration. Although the game can load the save file just fine, I have no quests in the quest log and every region/place I have been seems out of bound, for example, Devil’s Crossing’s gate is closed and there’s no NPC’s outside apart from one guy. Am I missing something?
Is it local save file though? If not then use this to help you work out how to move the GOG cloud saves into local ones. Then Steam should be able to access them if you have cloud saving in both Steam and the ingame options turned off.
Yes, the GoG save file was a local save file from the beggining, no cloud involved. As I mention the Steam version have no issue loading the GoG save file, the problem is in-game missing assets. The quest log is empty and it seems like there is no campaign progress.