3D mesh for retouch includes mesh elements outside of defined spacial reference area

When submitting a new production to create a 3D mesh for retouching, the resulting OBJ tiles include mesh elements that are outside of the spatial reference area that I specified during Reconstruction.  This results in a massive amount of extra editing in CC Editor and time wasted.  If I generate a standard OBJ, 3MX or any other production output, the results are as expected from the spatial reference area I defined.  Is this normal?