Animating Big Medium Small Assets WorkFlow?

Hello All - does anyone have a workflow they can share regards to animating Big Medium Small Assets - right now I’m using Rokoko for animation mocap and then exporting the animation over into iClone for clean up … the problem I’ve running into is getting the Mocap animations pair with the BMS assets even after I created an IK rig and pair the 2. I’m using the AstroNova kit - Does anyone have a workflow that workflow for them?