Board Game Arena

I set up this tournament https://boardgamearena.com/tournament?id=256850 with the idea that it would only use the new Map 9. But the first games, it let me select any map. What did I screw up/misunderstand? Any insight appreciated!

I think I figured it out. I used 'Custom Setup' and chose Map 9 instead of "Same map for all players".
I will put in a suggestion that the map selector not be shown UNLESS it will be used.