This tip will mainly apply to people who have been using Lightroom Classic (when it was called Lightroom) since the early days. The Process Version is the underlying secret sauce Lightroom Classic (LrC), Adobe Camera Raw, and Lightroom uses to develop our photos. Originally, the process version had the year it was released in the name (like Process Version 2010), but then along the way Adobe switched to numbering the different Process Versions, and the latest is called Version 5. All that said, if you have been using LrC since those early days, and have upgraded your catalog with each new version, then you may have some photos that are still using the Process Version in use at the time they...