Using a new Apple ID to update an app purchased with old Apple ID
I need to update an app which I purchased with an Apple ID that has been deleted, with a new Apple ID (currently using this).
I’ve been told that in order to do that I’ll have to delete the app and download it again with my new Apple ID, and that “purchases are forever tied to the AppleID used at the time of original purchase and download”. (Answer found here: https://discussions.apple.com/thread/7633725)
Does offloading the app and reinstalling it count? Because deleting it would mean losing all my data.