Venáil mission "New Settlements"

How do I get the Venáili mission "New Settlements" to complete?

The criterion I'm stuck on is "We need to have a colony with 10 fully-colonized provinces in the Colonial Noriun region".

My colony Aeliande has way more than 10 fully colonized provinces in Colonial Noruin, but the criterion still isn't fulfilled.

Is it because it specifically has to be Antiruan with 10 provinces, since that's the Noruin colonial nation? Did I screw myself over by feeding provinces to Aeliande?

I thought that's what you're supposed to do, because the outcome of the subsequent mission "A New Beginning" says that you inherit Aeliande specifically.

What am I missing here?