Those models were lost during the move from EARS to Fairfax. They need to be faithfully recreated, at least in style.
Actually, you're thinking of the character artwork. The environment art never had 3D models - at least, nothing that was ever kept that I had ever seen. Everything that was made since UOSE has always been pure 2D.
Additionally, those files did not survive well the move from OSI to EA, not EA to Mythic. You have to keep in mind that a lot of stuff had been backed up to TAPE drives! Additionally, a lot of the character rigging had used plugins that no longer existed by the time I came on. It's one of the reasons that I require all assets to use no plugins now. Plugins have a way of getting outdated or unsupported quickly, which leaves you very screwed.
It's one of the reasons there are a lot of games out there that have teams that cannot upgrade their tools (3D Studio Max, for example) and are stuck in very old versions. It happens a lot.
-Grimm
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