Hello, dear development group and users. I met up with a minor trouble when it comes to item management using Zotero 6 these days. Let us firstly put this in a seemingly general scene, in which we are clicking on one item that has just been imported via .ris files and added to our library, and drag it from the current path (or category) to another after reading its abstract and deciding to which category it belongs in our hierarchy of knowledge (or just for this library). In my own experience, this operation tends to form a copy of the item in the new category while maintaining the current one. The first trouble comes when we make notes under the item of new one, and followers shall come everytime we move the item from one category to another, leaving multiple copies of a single item in numerous folders with unshared notes and annotations. And after a period of time when I try to make a review, I find it hard to pursue my primitive and archaic thinking and lose invaluable information afterall. My friend who uses Endnote once told me that the same operation in Endnote would not make a new item but a reference of the old one, making the notes consistent and mageable. Hence, I would like to ask for a solution or any ideas that would help in Zotero. Also, I would like to compare and ask if the mode of making multiple references while maintaining one original item is better? Thanks!