Problem exporting semi-transparent materials - ChickenR91

Hi,
I’m trying to export a model with semi-transparent textures. However, the egg file that Chicken produces does not include the material’s alpha values, or any hint that the object should be semi-transparent. Is this a “feature,” or am I just doing something wrong?

Thanks!

My material settings:

probably simply not supported. might be possible to mix them into the vertex transparency somehow