I use a 32bit mapping system myself and with Vue I get no better results than if I used 16bit or less. Your Best Option would be to save your model or heightfield in Object format and then import it into Vue. You should retain most if not all of your finer details, but heightfields and picture based terrains only work about as well as a 60 meter DEM, ........... maybe a tad better, but not much. Vue is Impressive Indeed, but IMO it's big downfall is Finely Detailed Terrains as they look as they are exported them out of World-Machine or TerraFormer2, but even that isn't  to hard to overcome.

I would rather be Politically Incorrect,
Then have Politically Correct-Incorrectness!!!