A little issue I ran into on a few of the others I've been getting at, is missing planes after export. For example, this one, on preview, everything is properly assigned and visible, however after export to Collada, the 'eye' area vanishes without a trace and there is only one material group just labeled '_mat' with one texture applied to all areas of the model, rather than how it appears on preview. Exporting as SMD causes both the mouth and eye planes to vanish, and exporting as binary just crashes SPICA.
https://www.dropbox.com/s/61rzoz3t905sbr...2.zip?dl=0
https://www.dropbox.com/s/61rzoz3t905sbr...2.zip?dl=0