I read that you have it as a square, are there any perpendicular realations attached to that square? Is the square sketch fully defined too?
Well first off. Its not really a sqaure, for the eye it is but the verticales are not really verticale, they are .000? degrees of. Defined by the configuration you loaded from the designtable. Futher more it is fully defined and it hasn't got any perpendicular realtions. The two horizontal lines have a horizontal relation
You might want to move this question to the Configurations and Design Tables forum as it is not really a question about importing from another modeler.
You might try changing your design table to make the horizontal lines rather than the pseudo-vertical lines.