I was recently playing the 2.2 as Maldrood and I managed to catch Zsinj pretty much alone over Garos IV (not my planet) and came arcoss what might be a bug or a feature but I wasn't sure so I wanted to ask.
I went in with 10 ISD2s, 8 Gladiators, 2 patrol ships, 2 Crimson Victory ISDs, 4 artiquens, Teradoc and the guy from the Antimeridian Sector, and the bigger ISD (than ISD2; sorry I can't recall the name you get). Didn't lose anyone but when it was over and I killed him my entire fleet disappeared. I know this advanced the game as the Imperial Remnant split off but was it intentional for the entire fleet to disappear? I've still got my full unit cap too so this is odd.