Epic Games Library Location. In explorer, go to c:\programdata\epic\epicgameslauncher\data\manifests and open all of the.item files in a text editor (e.g. Copy this game folder to another location on your computer.
Unfortunetly there is no way to do this in mass. Use epic launcher to reinstall new games, when it asks for a location select where you just copied the files too. Open epic games launcher, click “library” and locate the game you wish to move.