This is my first time writing a steam guide, apologies if it's rough around the edges

1.1) Launch the game on steam and open the album
1.2) if you have no photos take a random photo

2) exit the game, and close the launcher,

3.1)Find where the original game is located (not the steam version)
3.2) Find where the steam version is located.
3.3) Head to the X6Game\Saved folder

4.1) if you see a folder called GamePlayPhotos skip to 5, otherwise go to 4.2
4.2) show view hidden items in the file explorer (win 11: click view, show -> Hidden Items)

5) Enter The Folder, and enter the subsequent folder with your UID in it.
5.1) in the original launcher you will see folders like this:
CloudPhotos
CloudPhotos_LowQuality
DIY
NikkiPhotos_HighQuality
NikkiPhotos_LowQuality

6)Copy and paste the folders to the same place but where the steam game is saved.

7) Launch the game on steam and open the album, then select the previous page, the photos should appear.

Notes;
The photos may show as loading but if you click them they will appear, this loading effect dissapears after a while.