It sounds like your hinges are applying machining to the outside of the part. This may be caused by a material thickness with an incorrect hinge applied to the product in the material file. An example is, if you use 5/8" material for cabinet sides but have a 120 DEG Blum with 0mm base plate for the door hinges. In this case the associative machining is finding face 6 of the part rather than face 5. The fix for this condition is to use a hinge with a 3mm base plate, where the machine tokens are adjusted for the 1/8" difference in material thickness. To see how the machining is applied to the part, draw the product in 3D and HIDE the drawing when viewing the product from either the left or right side, if you see the boring for the hinges when the objects are hidden, then the machine tokens are detecting face 6 of the part.