I have Vegas 10 and DVD Architect 6.
I currently have Dolby Digital capabilities; I think that comes with DVD Architect.
If I upgrade to Vegas 13 Edit, not Pro, will the Dolby Digital plugin still work?
I ask because the product comparison sheet shows that Dolby is only included with Vegas Pro/Suite.
You'll be fine. The only reason that the product comparison says what it says is because Vegas 13 Edit does not include DVDA which you already own and that's where the "Dolby Digital Professional Encoder" (to use Sony's own words) comes from.