Hi @xflintx
Thanks for the post on this - better late than never.
It sounds like once the bug has been identified and fixed, all users who were not awarded the badge will still need to re-ride the route. This is not ideal but it sounds like as a user we have little choice in this matter 
Moving forward, can I suggest you or your team provide something of a regular update on how this fix is going please? By regular I mean every few days or so - at least communicating to the forum on a consistent basis. That way we at least know this issue has not fallen off the radar, is being worked on and we can see there is progression.
If it helps, one of the contributors to the forum posted this article which may assist in your analysis.
regards,
Courtenay