>We maintain an VFP and FPDOS versions of same application. There is one prg in particular that changes frequently and must be kept synchronized. To accomplish that I am trying to #INCLUDE the DOS prg into the VFP version using the preprocessor to resolve the issue. Unfortunately when the file is compiled the code is not pulled in.

VFP code is not supported in the #INCLUDE files. It's ignored by FoxPro. See help for details.