Kendzi,
o-sewa ni narimasu I am your debtor.
Export to collada works, and I even can open results in Deep Exploration. I still need to do some testing, but looks i can do what i need)
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The first pic is rather about translation of the word hip into russian.
if you ask my opinion, it is quite simple:
what is now called hipped should be renamed to primitive_hipped or be dropped. I do not know any building to which it can be applicable.
roof:shape=9.0 should be renamed to hipped. It is realy what is needed.
It also works with simple rectangular buildings.
Both buildings on the screenshot have roof:shape=9.0, but should have roof:shape=hipped.