Warped Assets are missing

Hello I am using the asset warp tool. It seems very cool especially with combining it with classic tween. I was building an animation with several layers and warped assets. I was moving layers and frames around. All of the warped assets in the library are empty. The objects still remain on the stage but i cant warp them anymore. When I double click on the assets I get an empty canvas with no artwork. Is there a way to recover warped assets when something like this happens? thanks.