https://discourse.mcneel.com/t/document-usertex-pasted-with-objects-and-imports/61291/6
Document Usertex pasted with objects and imports - #6 by brian - Rhino for Windows - McNeel Forum
May 26, 2020 - Hi, When pasting geometry from another file, the DocumentUserText from the parent file is pasted as well. I assume this to be a bug. Furthermore if I undo, the...