Bosch-Man wtf are you talking about?
are you getting confused with automotive a/c systems that used to use r12 and now must use r134a?
r22 is used in building a/c and commercial refrigeration. you can continue to use r22 until 2010 so that's what we'll do in our chillers at work and then look into drop in replacements. by then, there should be more evidence into which give the most reliable results. if in doubt, follow the recomendations of the compressor manufacturer, as that is the only mechanical part that will fail as a result.