I tried this sometimes ago but have no head way! Let us know if it work.
What i ended up doing was to load it on a less busy router board, got what i want and then restore the original config back to the board and was even faster and easier. Another way is if you dont have an idle board/OS, is to run the demo license on a hdd or bootable flash and restore it on that, get ur desired info and wipe.
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