Previously, if I tried to add an pdf of a second work with the same author and title--for example, an article was republished later in a collection, and I'm trying to add the chapter after I already added the article--Zotero would rename the collection chapter as author_title2 and link it to the item. Now, Zotero still renames the pdf, but leaves the link as author_title, so it ends up connecting to the article pdf instead of the chapter pdf. Likewise, if try to "rename" the pdf after I capitalized a word in the title in Zotero, it renames the pdf as author_title2 but keeps the link as author_title, so the link to the pdf no longer works. This was working fine before, so should be easy to fix.