Could someone please offer some guidance on how to use FAB content or Megascan Environments in the Aximmetry version of Unreal Engine?

Some of the environment are not compatible with the current Unreal Engine version of Aximmetry is there a workflow that will work. Would asset or project migration be the way forward?

I'm pretty new to Unreal and Aximmetry and working through the many tutorials that are out there. So far I have made a basic few shaded shapes and managed to get my first very very basic scene up and running with a virtual camera and one billboard. I'd now like to try a few assets from the marketplace to see if I can move onto the next stage of learning.

Any pointers would be very much appreciated.