Go to the “My DocumentsRockstar Games” and copy the “GTA V” folder.
Go to your root directory (e.g. C:) and paste the folder there.
Log out of the temporary account, and log back in to your original Windows account.
Copy your game data into your original account:
Go to your root directory (e.g. C:) and copy the “GTA V” folder you pasted earlier.
Go to the “My Documents” folder
If you already have a “Rockstar Games” folder:
Click into the “Rockstar Games” folder and paste the “GTA V” folder there.
If you do not have a “Rockstar Games” folder:
Create a new folder in this directory called “Rockstar Games” (without the quotes).
Paste the “GTA V” folder in this new directory.