What type of map/environment did you design in CE? If it’s an interior only then you can import the raw assets in UE like in CE. You will have to be aware of issues with model normals like mentioned in a post above. If your map includes an exterior with terrain you may be able to export the terrain from CE as a height map which can then be imported into UE. If your terrain in CE was created with an external app like World Machine then you can import that original asset from WM into UE. Unfortunately, there’s no option to directly convert your project file from the Cry Editor format to UE but the vast majority of your assets should import then you build from there like in CryEngine. Best of luck in your conversion and you are making a great choice!