If I did my project in UDK, how can i port the game to UE4 Later on

I am considering buying a license to UE4, after i release my project in UDK, and have enough funds. Is there anyway which i can port my current UDK Project, code, and Assets to Unreal Engine 4 easily, so I could upgrade the engine as a free update for PC Users, and to get the ability to port my project to Xbox One, using the id@xbox program.

yes i understand that i cant port the project over, but is it possible to reimport and modify the assets, game-scripts (Weapon-Data,etc), and maps to work with Ue4

Ya sorry looks like everything will need to be redone