Yes, basically. Frankly, the biped rig is extremely out of date. I believe Max's CAT rig can be more easily transferred to Maya via FBX - there is an option to convert CAT to Maya's HIK system.
It may seem like more effort now, but a simple and flexible pipeline for characters will save you an immense amount of headache later.
If you are capable of getting the rig - however it is setup - into Maya to animate, you should be able to export the skeleton and meshes from there as well.