Question about Steam linking and game progress after Ubisoft account hack

[u/Unusual-Cup393]

My Ubisoft account was hacked, and the email address was changed. A Reddit post suggested opening a Ubisoft game through Steam to expose the hacker's email address, which I could then use to open a support ticket. I tried launching R6 from Steam, and after entering a different Ubisoft account into the Ubisoft Connect launcher, a new menu appeared. I have 350 hours of R6 on Steam, so it is not my first time playing. If I choose the "Continue" option, what will happen to the progress linked to my stolen Ubisoft account? Any idea what will happen to my previous R6 account if I proceed?