Bulk delete Saved Locations?

Not finding anything current...

I have loaded a handful of waypoints to my F5X-P as part of a three day backpacking trip.  I won't be using these waypoints again in the near future and would like to delete them from the watch.  Can't find a Delete All Saved Locations options on the watch and deleting them through Basecamp doesn't work.  Deleting them one by one is tedious.