Order of Motion rig parameters does not carry over to FCPx

So, I create a generator in Motion 5 with about 4 rigs with 5 to 8 parameters in each rig. When I open the generator in fcpx and look at the parameters to adjust, they seem to be randomly placed (not reflecting the order I set up in Motion). It doesn't seem to be grouped by type or alphabetically. A bit frustrating to use in practice because in Motion, I grouped the parameters in a way that made send to my work flow. Is this a bug?

thx