I can't replace assets, textures, models, or anything, COD WAW

[toxic patrol]

I can't replace assets, textures, models, or anything, the option is grayed out and when clicking it nothing happense. COD WAW. I went into the game, first tried the first map and clicked "capture" once it finished closed the game then I tried opening it in omniverse but it wouldn't let me replace assets so I tried it with a diff map, same issue, no other games has had this issue before so i'm not sure why it's happening

clcking it reloads the scene for a second but other then that does nothing (quick lag spike, lodaing symbol apears, everything goes back to the way it is now)