I already reset my huge database but only by accident I found out
all season 0 episodes don't show up in mezzmo under "series"

Season 0 on the online sites is always for specials.

https://www.themoviedb.org/tv/4629-s...e-sg-1/seasons

they call it "specials" but it's organized as season 0 also into my XBMC scraper (Media Companion I use) it's put in season 0.