I'm not sure I understand the question... Are you moving the RV out of the freezing temps or are you keeping it in the cold?
If you move it out of the freezing temps, you are fine. Simply get to your destination and hook up to water. The water will flush out the antifreeze. When we go to Florida in February we just keep it winterized until we hit central SC and warmer temps. If we stop somewhere its still cold, we just don't use the water from our camper.
If you are staying in freezing temps the water will freeze unless you keep the underbelly and all pipes above freezing.