First of all i would suggest that you may also carry out surface recombination sampling through separator as well. Secondly, if the results are same, there shouldn't be much astonishment as this is a common phenomenon observed in many fields. What your reservoir pressure has indicated probably exists at a depth of 4500 ft. The recombination sample collected by MDT has accurately determined the dew point at 3200 psi which means your initial reservoir is lower than the saliquid saturation pressure and therefore there exists an oil rim that seperates oil from gas. (In this particular case, oil refers to condensate). During draw off from reservoir, condensate being lighter moves alongwith gas. gas in this case moves as a result of capillary action.