password – keepass2android file locations

I’ve been using keepass2android for a while. I try to store my files in dropbox so I can access across multiple devices. I have noticed that somehow I have some copies of my mypasswords.kdbx file that are listed as being in the content:// I’ve searched around and can’t find mypasswords.kdbx file anywhere on my phone.

Does anyone know where content:// is located? In desktop keepass I can synchronize two password files that have the same master password, but this doesn’t seem to work in keepass2android.