IK Rig export/import?

Hey guys, Im jumping into retargeting in UE5 and am wondering if there is a way to Export and Import IK Rig setups?
I have moved my game to UE5 and am trying to do some retargets, I migrated the IK_UE4_Mannequin setup from the Lyra game to my game, but I dont see any way to assign that rig to my current UE4 skeleton.
Do I really have to manually recreate this IK Rig setup?