Woah, lol, I had a straight thought that steam dlc will work on switch cuz of lazy pc port. Also it's size is 2gb less than my mod from ps4 files. Great job!
I have japanese save with around 25 hours and wanted to inject it in english version of game, but it didn't work. It's weird because even savefiles have the same weight.
I was able to pull out my save files from the demo, tried to rename it trivially, but the game says that the date is corrupted. It means that i need to replay. :(