Cloudy on Kegging

Good clarity after secondary. Upon transfer into a squeaky clean, sanitized keg, the beer turns cloudy.  Bottled remainder of beer with no cloudiness noted.  Happened once previously, also with a wheat beer. I?ve kegged numerous other beers, all different styles, with no problem.

I?m stumped. Northern Brewer had no idea.

Please help

Chill haze? or likely Oxidation. you said clean sanitized keg, but was it co2 purged and did you perform the transfer closed loop or open?

In addition to dtapke's questions, did you cold crash the beer before transferring to the keg and at what temperature did you chill it to?