Friendly territory to upgrade?

[Soronery]

So I came back to play Civ V after a couple months. I see the game is still riddled with <snip> crash bugs. Anyway, I have 5 jaguar warriors and I want to upgrade them. Got open borders with ghandi to upgrade them. What? "You must be in friendly territory in order to upgrade" ...well okay.
I pay 500g and ally a city state. Move into it's borders and..."You must be in friendly territory in order to upgrade" <snip> I hate this game my closest city is like 10 turns away.

 

[BobDole]

It was a change made with one of the recent patches. I forget if you could ever upgrade in another Civ's territory (I don't think you could) but you used to be able to use a CS's territory as "friendly" territory. That's now changed.

 

[Resident Mario]

They changed that a few patches ago.

 

[Randall Turner]

Yep, most recent patch changed this, you used to be able to upgrade in City-States or any civ you had open borders with.

(This really affected my game, I barb-hunt globally with far-ranging little two-unit hunter-killer teams. Patch downloaded in the middle of my game, I was like - aww, crap.)

 

[Hustapha Thool]

I believe you still get the "embark" upgrade in these friendly allies.

 

[LegionSteve]

I wonder why they changed it? It made sense to me that a friendly city state was 'friendly territory'. Never occurred to me that it was a bug.

 

[Gordon Brittas]

I believe you still get the "embark" upgrade in these friendly allies.

Yes, boats and embarked units can upgrade or heal in allied territory.

 

[TPQ]

Well, it kinda' makes sense. You discovered a new tech in your nation, so you have to send your troops back home to be upgraded. I do sorta' agree though, that allied city states should function like home territory for upgrades, but I don't have a major problem with the current system.

 

[bryanw1995]

I got caught in the first game I tried to upgrade in "friendly territory". Not a big deal now that I know about it, but at the time it was frustrating.

 

[Lyoncet]

I wonder why they changed it? It made sense to me that a friendly city state was 'friendly territory'. Never occurred to me that it was a bug.

Much less likely a bug than a balance change. Buying a city-state to act as a proxy city which will fight with you, give you a beachhead, and let you heal up your units is already such an overwhelming ROI that letting you upgrade to the units you researched on the way (assuming you're at a distance from your target, which is the only time upgrading in a CS territory would likely be a large factor) is completely unnecessary. As it is, you need to be confident in the force you ship out and ready to make sacrifices before you can get yourself a solid foothold.