So it took me awhile to transfer my saves over but I'm now fully game sharing with my wife. To get my saves over to her switch I had to manually backup my saves (+ the backup save to cloud) on my switch and then manually download from the cloud on her switch (+ then download from cloud). Working great so far!Been trying to figure that out myself. Seems there isn't a way to do so.
Edit: unless you're talking about two accounts that are yours (two regional accounts) gamesharing to one other account