The Return Folder for Lightroom exports
Lightroom never saves over an original, so BookProofs watches a Return Folder instead: export into it and anything with a matching file name goes straight back into its placeholder. One is created for you in Documents under BookProofs. Change it under Image Editors in Settings, and hover the folder name there to see the full path.
Starts at 5:25 in the 1.3.9 release videoWatch on YouTube
More in Settings & preferences
See all 13Low resolution and DPI warnings59:03Keep the existing template when you remove an image52:59Keep the opposite page when removing an image53:37Match aspect ratios or preserve order (retired in 1.3.5)54:08Image placement mode (retired in 1.3.5)52:14Reset zoom and pan on template change54:42Turn template hover previews off59:35Turn the edge drop overlays off1:00:02Stop blank spreads appearing at the end1:00:25Jump to a spread after dropping photos on it1:00:37Automatic page numbersGuideNon-destructive vs destructive external editing3:46