Overwatch downloaded from the store, what happens when I insert a game disc?

I downloaded Overwatch on my PS4 during the last Free Weekend, and the game itself has not been moved or deleted.

Now that I have the Origins Edition on a Blu Ray, what is going to happen with the existing data? Specifically:

• Are the existing updates valid for the disc? Or I have to download the 20 GB update again? (I remember that some PS3 games had different updates and savedata for Digital and Physical copies)
• Is the game still launched from the disc?
• Is there any real difference between both copies/installs?

Solution 1:

Digital and Disc are two different versions. Save data work if you have the same region between digital and copy disc. Also, you can have 1 version of the game installed (digital OR disc copy).

From my experience, you will need to reinstall and download the data.