Steam Workshop: Adding Extreme Chase To User Map List

What to do if you subscribe to Extreme Chase in Steam Workshop ( https://steamcommunity.com/sharedfiles/filedetails/?id=2641851204 ) and it doesn't appear in the user map list.

Same steps will work if you have this problem with any other Rise of the Triad map: the .bin file you will find in its workshop folder is just a renamed .zip ... https://www.youtube.com/watch?v=K1LfN1xSbf8