Adobe Evangelist Julieanne Kost posted a tutorial entitled “Merging Lightroom Catalogs” on the Adobe Channel back in November 2014. For travelling photographers, it covers how to use Lightroom when away for a home base on a shoot. To get the most from the tutorial, make sure that you are running Lightroom 2015.1.1 or 6.1.1, not the ill-fated version 2015.1 or 6.2.