I use the default DV setting for my After Effects animations, but after I import them, Vegas insists on rendering them before I print to tape. Can I customize my AE settings so Vegas doesn't need to render the video?
I would think that it would be possible to render using the MS DV codec (if you're willing to live with it's problems) and have Vegas print to tape without rendering. However, all your settings will need to match. Something doesn't match. Compare media properties for an AE rendered clip to the media properties for one that prints without rendering, and see what's different.
Although, like kkolbo said, you're going to get better DV using uncompressed from AE and the SF DV codec.