Why would you need to travel to HQ to fix stuff? Simply log onto BSA online advancement and back out any advancements. You can "almost" completely edit a scout's advancement that way. I just went in and re-confirmed it's that easy.
Same with scoutbook. Clear out the date earned and BSA should clear out the date earned.
Because if you don't catch it right away -- and with some volunteers this happens due to lack of training or knowledge or capability with technology -- you need to head to council to submit paperwork to back out what's in the system. Trust me, have had to do this on a few occasions. On the plus side, we developed a detailed training program for anyone using advancement software.