I just did it! Basically, the easiest way to merge the two sources is to enter the same thing for both in the EDIT STATUS FIELD. Instead of using "new" I used "combine" [like the manual said- :)]I went to Source Search to search for sources using that edit status, then used the Combine Source option in the Utilities/Projects menu to merge the two. I'm still working on it. I have a bunch of R3imports that were missed or I didn't put abbreviations on or something. Melissa tried to help me through this a week or so ago and I got flustered, too. But I've done it once this morning ... now to the rest ... .