How could I remove the asterisk on the "Keyword" icon in Inspector?

How could I remove the asterisk:

Remove all of the keywords for that item. Those signify whether or not a particular inspector pane has been used, and are thus a reference to you when you aren’t looking at the pane.

Thank you very much,

Ah yes, I thought, there might be a connection to why I cannot drag and drop / import items / files to some items (docs, folders) in the Binder anymore. But the keywords, of course, will not be the cause for that.

Many thanks again