New Project - Migrated BPs - Same Name

Had an issue with a project, so I made a blank one and migrated all the assets over. I tried opening the packaged app on my phone but it didn’t load the save from the other project, it created a new one. I understand why, it’s technically a different project, but is there a way to make it know it’s supposed to be the same project? Literally everything is the same, same name, same app ID etc, I even copied the unique project identifier, but still no luck.

did you copy (manually) the savefiles from your previous project?(they are in your project folder under Saved/Savegames