Can I put my naturally carbed keg in the fridge without gas?

I have a keg sitting at room temperature that I naturally carbed about 6 weeks ago. I have a party coming up this weekend, and one of the kegs in my kegerator is pretty close to empty. So I want to have my backup keg cold and ready to switch if the other kicks. What I want to know is if i put my naturally carbed keg in my garage fridge for a couple days, will it lose any of its carbonation by being cold without having any gas attached?

Cold temp will help co2 get absorbed into the liquid. You don't lose co2.
Do it!!

I would go ahead and do that. It will help the beer have a truer carbonation level.