The problem is that ‘Output Hidden Layers’ ON/OFF function is only valid for the top layer of any set of layers.
If this function is selected , you would expect that all layers selected as ‘hidden’ will not be output. This is only true if the topmost layer in any one set of layers is specified as ‘hidden’. If, for example, we have a set of layers A, B, C, and the top layer A is selected as ‘hidden’, all the layers beneath it will also be treated as ‘hidden’. however, if the top layer A is selected as ‘display’ (cut), all the layers beneath it will also be cut, even though they may have been specified as hidden. The customer just needs to make sure that the topmost layer in any one set is ‘hidden’ or select the specific contour line to cut the desired image.
Does that sound confusing to you? it certainly confuses me! 😀