That's exactly what I do! It works great. I just bought two black QDs (for ball lock kegs) and and some line and connect "out" to "out". I put some co2 in the receiving carboy, and then pull the relief valve. Then hook up my "jumper cable" and push the beer with co2. Occasionally, you'll have to pull the pressure relief valve on the receiving keg. It's easy, and now you have a sediment free keg of beer!
Broken Leg Brewery
Giving beer a leg to stand on since 2006