CMC Markets - Dollar retreats after the 23K decline in the February ADP survey on private payrolls emerges as a more despondent showing than the expected increase of 10K. The ADP survey's effectiveness in predicting private payrolls has been significantly misleading over the past 3 months, which implies that an upside surprise in today's release (greater than the 10K forecast) is unlikely to trigger a material reaction in currency and foxed income markets.