So I've been trying the selective pre-render on a 3D video and am getting strange results.

I select a set of clips I've already trimmed and strung together with cross fades and pre-render with the stereoscopic mode set to side-by-side full frame (same as the project BTW).

As it renders, it displays the clips as side-by-side half. When it's done, though, they display as desired...but...

If I save the project, exit and come back. the pre-rendered clips are displayed as side-by-side half and Vegas doesn't seem to recognize them as 3D clips any more.