Thanks for the reply Ioa. I’m running Scriv 2.7, and have been since it was released, so no issues there. I’ve just run a very simple test by creating two blank documents. In the first I typed ‘This is also a test’ and created a snapshot. In the second document I typed a line and then created snapshot. I made two more modifications to the document, creating three snapshots for the second document in total. I then merged the two documents: 4 snapshots available to view so at first glance all seems to be working correctly. However, none of the snapshots contain the line ‘This is also a test’, typed into the first document. So, the snapshot of that document appears to be lost. I have restarted the project a couple of times, and have no joy viewing the old snapshots I mentioned in the original post, or indeed of the first document in my test. What am I doing wrong? 