linked google doc assignments have disappeared from pre-created modules.

[JulianneStandis]

linked google doc assignments have disappeared from pre-created modules. Starting with this week's module, doc's that I've linked before (and used before) have suddenly disappeared. BUT, it still shows that I've linked it, it just doesn't show to me (blue paperclip) or to students! HELP

[JulianneStandis]

AND, I cannot seem to re-add them in!   I go through the steps but it still doesn't show "attached"