I was obviously not talking about applying the AE effects inside Vegas, otherwise there’s no point in going to AE in the first place.
I was wondering if there was a workflow either built in or via some plug-in that would allow me to export my timeline to AE, do my FX and then re-send it to Vegas and it would be all in the same order, etc. FCP and Shake had that integration for example and so did Color. You would obviously render out from Shake but the rendered clips would be re-sent to FCP and would be in the same order, keeping all the cuts etc. Otherwise if you have an edited timeline with 25 clips that need FX work, you have to render each clip separated, import in AE, render them again separated and re-import in vegas and either re-organize by hand, re-link manually or something like that.