Zotero enables two possibilities for lists : you can either have items in nested lists exclusively appear in the specific list you put it (like in Tropy), or have it shown in all the lists in the tree structure of the list you choose.
For example, If I put an item in the “Images” list, which is embeded in the following list tree “Archives/Mexico/National_Archive/Images”, then it would appear in the “Archives” list and in all list in between. This is very useful for level filtering purposes, because sometimes I want to look at all that is contained in, lets say, the “National_archives” list.
If this possibility could be added in the future, I’m sure I would not be the only one very happy about it (since Zotero users use it). Thank you very much !