MediaBay - how to edit field "content set"


Cubase 8.5.20 Build 169, Windows 7 Pro, 64-Bit

My understanding is that the data in the preset browsers field “Content Set” is basically the libraries name that shows up in the preset browser in VSTi instruments.

In the current MediaBay now I can’t put in data into the field “Content Set” - which is a Text field.
It is not possible in search results (enabled: Settings, “Allow Editing in Results Lists”) or Attribute Editor.

I have done this in previous versions.

Does anyone know how to do this now in the current version?

Thank you,