Let me explain what I am trying to do.  We are in the process of automating the first page of our drawing sets. As a part of the automation, we are inserting our panels into the first page as a block.  The boarder of our drawings is an XREF drawing and blocks are inserted into said border to create our first page.  When it comes to one particular block, we have different thicknesses within the same block.  So in order to not have multiple drawings of the same block, I combined all of them into one and use layer manager to control which thickness is needed.
 
The problem...
When inserting the block with the different thicknesses and using layer manager to show the thickness needed all layers in the XREF drawing are turned off.  I tried adding the XREF layers (they are consistent all the time) into the Layer Manager, but when inserting the block into the drawing, the XREF layers did not seam to be within the different layer controls anymore.  I am now at a standstill and not sure what to do.  I would be grateful for any and all suggestions.
 
Thank you for your time.