Capture Age coming to Definitive Edition

Very nice. I need to try and port a map I made into DE someday. Someone said I should just use UP 1.5, but I’m not sure what that is or how to get it. Google search yields something about “UP 1.5 - Portuguese Civ Mod III” on Voobly… but I don’t think that’s what I want

How did you port yours into DE? I don’t want to import a scenario, campaign, or civ. I just want to do an .RMS map (a random map I made with my own terrain, resource distribution, aesthetic features, etc.)