SACD Warning--"Do not use liquid cleaning..." ?

Several of my SACDs come with a warning on the inside of the bottom of the case "DO NOT USE liquid cleaning and/or anti-static solutions on this disc." What is the story with these? I noticed that the disc surface looks different from my other SACDs.

Supposedly Shine-ola is safe for these SACDs. But how about Mikrosmooth (which involves rinsing the disc with water afterwards)?