We have several test bed units and want to extend a 14-pin ribbon cable from the existing PCB JTAG header connector to outside the box so the top covers can be installed. If one of the EUT units has a problem, then we can connect the JTAG HS3 to the extended cable for debug. So the ribbon cable would be 14-pin female (PCB) to 14-pin boxed male (HS3). The PCB side is no problem, but apparently a 2MM 14-pin boxed male ribbon cable compatible connector does not exist, nor does a 14-pin male to female PCB gender changer adapter that would allow us to use the 2mm 14-pin female to female ribbon cable. We could probably adapt the 18-pin connector as you suggested, but it would not be ideal for our test setup. I plan to touch base with Xilinx to see what they recommend, if anything, but we may end up just building our own PCB adapter.
I appreciate your time and suggestions....!!