I am using Lightroom Classic (LrC) version: 13.0.1 [ 202310121438-d2af310c ]. I'm on a M1 Max MBP with Sonoma 14.1. In all of the description below, Lightroom Classic => Catalog Settings => Metadata => Automatically write changes into XMP is off (not checked). My raw images are on an external SMB file system (NAS type setup). This may appear to be the same symptoms as this bug report but it is different. It may be the same actual bug(s) however. This post in LRQ Forums has my initial discoveries.
One way to create the issue is to launch LrC with the external file system mounted. LrC will see the raw images. Now, without restarting LrC, unmount the external file system. Parts of LrC will notice this change and other parts will not.
Make changes to an image such as adding keywords or GPS information. Now, re-mount the external file system.
You will now see an exclamation point on the thumbnail and when clicked a dialog box appears with three choices: Retry Metadata Export, Import Settings from Disk, or Cancel.
The problem is that I never asked for the metadata to be synced externally in the first place. And today, another issue came up. I am now very careful about restarting LrC if I mount, unmound, or re-mount the external file system. I stop LrC. Do what I want to do with the mount point. Then restart LrC.
But despite this, I stil have ended up with exclamation points on my thumbnails telling that the external sync of the metadata has failed.
I guess this is a bug report but I also have two suggestions.
1) Give me a way to find all of the images that have the exclamation point about not being able to sync the metadata.
2) Give me a way to ignore the exclamation point. This second suggestion may not be necessary if the displaying of the exclamation point is more predictable.
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