Update Material on LiveDB

[CoCo]

Hey there, I've searched the forum (maybe not enough?) but haven't found the answer.. How can I update a material preset on LiveDB and not create duplicates ?
Also when are the thumbnails generated ?

[CoCo]

Nevermind, just saw the LiveDB options on my account
But my question about thumbnails is still valid though..

[bepeg4d]

Hi CoCo,
great that you have found the section in your personal area
don't worry, in general, the thumbnail is generated in a second time and the user doesn't have control over this
ciao beppe

[Elvissuperstar007]

Clean with online materials, I removed some but they are still there