I did an experiment to try to identify the problem. I added a record with an attachment to Bookends. I then checked on all three computers to ensure that the new attachment was showing exactly the same in each computer’s iCloud directory—which they were. I then opened DEVONthink in my base computer, and it showed the new file in the Bookends indexed directory. So far, so good. However, when I went to my second computer, it synced with the Dropbox store, and then showed the file twice, with both files having different timestamps for Added (with the timestamp being the moment I opened DEVONthink). I then went to the third computer, and the file was now in triplicate, with its timestamp for Added also the time when DEVONthink was opened. I have attached a screenshot that shows the triple listing of the same file. I hope this helps to isolate the issue.
