Ok, when you are done, open the Mission Editor Inspector window. Change the mapdata names to whatever you want them to be. Then save your map in a folder located in add-ons. Go to that folder and take the files in it and paste them in a new zip. Name that zip Map_Yourmapnamehere. Replace yourmapnamehere with what you entered in the inspector. Remember to include all the textures you used. If you want to add an loading image to your map, take a screenshot in game of the map. Then go into screenshots and find that screenshot. Copy and paste it into the folder that contains the map. Then rename the screenshot to your map's name. If my map was called Hills I would name the picture Hills. Then put that picture in the zip of your map. I believe this is all that is needed.
