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'Metadata changed' dialogue


Active Member
Sep 30, 2010
Lightroom Experience
Lightroom Version
Lightroom Classic version: 9.3 [ 202005281810-476e492c ]
Operating System
  1. macOS 10.15 Catalina
Hi, i occasionally get the following dialogue box
"The metadata for this photo has been changed by both Lightroom and another application. Should Lightroom import settings from disk or overwrite disk settings with those from the catalog?"
A couple of questions: -
  • I have the voice to either' import settings from disc' or 'overwrite settings'. Is there a way to compare what is different before i choose which option is best
  • What causes these messages to appear? I don't use any other editing software on the photos.
  • What is normally the better option? I am minded to overwrite settings since Lightroom is the only application i use on these files.
Jul 2, 2015
Lightroom Experience
Power User
This is a known problem. Lightroom sometimes sees ghosts, so it seems. Overwrite the metadata on disk, or simply ignore it.