Re: Upgrading
Another example might be in a game where you are a long way along the research path and really dont need to upgrade old research centers as you have enough research points.
Another might be where you have research miners to 3 and have not yet researched rads 3, and you just want to upgrade miners without having all the rads 2 upgrades being created, knowing that you will research rads3 soon.
And the worst is when you hit the upgrade button by accident and have to spend 20 mins deleteing all the upgrades.
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