Yep, you are right. Colored me shocked. From this week's billboard boxscore.One Drew Remains wrote:KC because they sold it out back in January. I've never been to an AB show that was so packed.
286 Alter Bridge Harrah's VooDoo Lounge North Kansas City, Mo. Jan. 28, 2017 $49,417 1,398 / 1,398 1 / 1 $60, $35 C3 Presents/Caesars Entertainment
I think from what I've seen when they show up on the Billboard Boxscore, this might have been their first non-NYC sold-out show showing on the Billboard Boxscore.