If something is on your file share and you hit discuss then it creates the thread, but if you then delete the item off of your file share does the thread still work?
The thread is still there, but the DL is broken. So don't delete it unless you're updating it. What if people wanna play your map, but can't get it?
That is why I never make V2's for my maps. It is better to work on it and get it as perfect as possible the first time becaus efor v2's most people don't come back for anotherDL.