This could be due to the fact that although P5 ships with all the legacy P4 and P3 figure meshes, in some cases the geometry may NOT be the exact same as the version used to create the original CR2. In this Case, P5 and Pro Pak are "smart enough" to recognize that this is a different version and reconstructs the obj for it in the P5 directory. Remember, just add or delete one vertex, or even weld a group or assign a new material etc etc and the OBJ will have to be modified.