This must be obvious but

DEVONthink
2

DEVONthink’s database file format remains the same between version 2 and 3. This means you can easily open your existing databases in DEVONthink 3, with no “conversion” or “migration” needed. However, DEVONthink 3 will not open automatically the databases that were previously open in version 2. To quickly find and open them, do this…

  1. Make sure the DEVONthink 2 application isn’t running, or better yet removed from the machine.
  2. In the Finder, do a Spotlight search for kind:database dtBase2 . This will show existing databases on your machine.
  3. Select Show all in Finder and make sure This Mac is set in the window that opens.
  4. Now, just double-click the databases you want to open.
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