Unfortunately, the connection with iclone requires an active license of the base software of xsens,  MVN ANIMATE PRO or at least MVN ANIMATE PLUS

Most of those who purchase the plug-in that connects iclone to LINK or AWINDA hardware require their software to be active.

Just think for a moment, the software license of xsens (today it is called Movella) is very, very expensive. So surely they will not allow you to bypass them by recording movement in RT directly into ICLONE and saving the file in whatever format you want!

If you fail, you will see that the first things that are blocked when the license ends are the HD processing and the possibility of exporting to FBX and BVH and the possibility of connecting to unreal engine and any external software.