Hide mesh is buggy. There are 2 ways to hide the mesh (manually in Mesh Edit/Hide Body Mesh and via automated routine in Cloth Layer Settings) and it does conflict when character is sent to iClone.
I stopped using Automated Hide Mesh Tool because of that.
So you need to clear the mess in CC first:
Go to Conform and click Reset to Default at the bottom.
Go to Cloth Layer Settings and click Reset Content Settings.
Now you would only have mesh which you hid manually. I'd recommend at this point Show All and start hiding the mesh over using Hide Body Mesh.