Playing on the latest versions as sophions.

Is is supposed to work this way now?

When i'm at war with AI faction and i invade and take over their capital planet it doesn't end war or affect the AI in any other way then losing 1 normal planet. In ES 1 taking over Capital planet triggered the 7 turn timer for the opposing faction to build  a capital on a different planet or they would lose and perish from the system. Now i have to take over every colonized planet they got in order to perish them?