I think you should only need to copy the .xml file from the working aircraft and replace the bad .xml in the F16.

The panel folder is holding the info for the HUD & the weapons panel only. If you have Armed the F16 with the loader program the panel will be re configured already and should be OK, the missing information is coming from the .xml file. By copying the Draken panel to the F16 in total will cause problems with the F16 panel in FSX! I would sugest that you undo this change and just copy over the .xml file to the F16 and that should see you working. I hope you kept a copy of the F16 Panel folder?

Pete