Will Sector-Administrated planets ever upgrade their Colony Ship?

I threw one of my colonial planets into a sector in a recent spat of colonizing, since I needed more, newer, planets in my cores!

Today, I looked back at it, and... well...

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Plenty more than 5 pop, and still rockin' that Reassembled Ship Shelter.

Since upgrading costs influence, is it even possible for sectors to upgrade this themselves?

Looks like, eventually... yes! enter image description here

Couldn't tell ya what triggers it, though.

Additionally, I found this line in the 00_strategic_resources script file:

influence = {
    accumulative = yes
    AI_category = influence
    max = 1000
    sector_ignore_cost = yes
}

Which seems to explain how Sectors handle the influence cost (They ignore it! Those cheaters!)

And, confirmed by Paradox Developer: https://twitter.com/Martin_Anward/status/737198287254654976

Sectors do not have influence, they ignore influence costs when building. Outposts cost for country in Clarke.

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