My best guess is that I left scent behind. You would think that would have spooked them out of the area right away.
It won't. Don't overanalyze it. They already want to be there and are active. Not like you're going to go back and tromp around more but they'll continue to visit and work the line.
I found two new scrapes last week. Almost stepped in one because I wasn't expecting it. Put up cameras nearby, hacked away trees near one to get good camera view. Had photos for mulitple days of bucks visiting. They'll keep coming back until they start chasin' whup and get other things on their mind.