I do own a copy of Hitman 1 and Hitman 2 for PC. But the game does not detect that and I dont get access to the Hitman 1 missions in Hitman 2. I guess that may be because I bought Hitman 1 via Epic Games and Hitman 2 via Steam. Is there a way to transfer the Data from Hitman 1 to Hitman 2 ? I linked both games to my IOI-Account.
There is no way to merge games on different stores or platforms.
Only thing is possible is to transfer your progress from HITMAN 2 (Steam) to HITMAN 3 (Epic), and even this action is a one-time thing.
Anything else is not possible