So Lightroom 3 asked me if I wanted to test the integrity of the catalog file and I decided that it's about time that I do. I also decided to make another backup. What caught my attention is that the main Lightroom 3 Catalog file is slightly smaller than the backed up catalog. It's the same date, but the backup file is 494MB versus 493MB for the "main" catalog. I'm just wondering if this is something to worried about? How can the backup catalog be bigger than the main catalog?
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