Why exactly do you have to download them again? (Are they are gone from the game folder, are they are not recognized?)
I’m not why I have to keep downloading them. Everytime I start up the console and the game it keeps saying that the dlcs are missing and I have to go to the store and re-download then.
So you are on a console. Which one?
How much space is free on your hard drive?
Did you tried to powercycle the console?