Lightroom CC: Some Photos Invalid after migrating catalog from Lightroom 6.0

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  • Updated 7 days ago
  • (Edited)
I have migrated my Lightroom 6.0 catalog to Lightroom CC. The originals are stored on NAS folder in line with official instructions and the option to "Store a copy of all originals in a specified locatoin" has been set before the catalog migration.
The migration has completed successfull and Lightroom CC has been busy with syncing the photos to the cloud. Unfortunatelly after syncing 34000 out of 54000 photos it has stopped the synchronization with an error message "Some Photos Invalid".
I've tried the solution provided in the adobe Known Issues DB (LINK) and in some other threads but without success.
Press Ctrl+A (Win) or Command+A (Mac) to select all the photos displaying in the grid and then do any of the following:- Delete the selected photos by choosing the Edit > Delete option and then add the photos in Lightroom CC again.- Apply a flag or a star rating to selected photos.

In case I take the second option to just change a flag or star rating the photo is synchronized but only the metadata, the original is still on local drive only (the NAS).
If I choose the second option the files are added successfully and synchronized to the cloud but I'm losing all edits performed on such photos. And it is very inconvenient for almost 20000 files, not even knowing in which folders they are located.

How can I fix this issue? If this is not resolved I don't see a point in continuing the CC subscription, now I can't even re-import the entire catalog as this can be only done once (not to mention that migration of 400GB in 54000 files is very time consuming even on a fiber channel internet connection.
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Adam Dr.

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  • disappointed

Posted 2 weeks ago

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Rikk Flohr, Official Rep

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I don't really have enough information to go on.  Where were your Lightroom Classic CC catalog and images located prior to the attempt at migration into Lightroom CC?

It is possible to remigrate a catalog a couple of different ways. I would rather try and understand what went wrong the first time than just blindly try to remigrate. 
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Adam Dr.

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Hi Rikk,

My set up Lightroom Classic CC catalog is located on an SSD drive on my PC. It also hosts LR Cache. Images are stored on NAS, normally I'm importing all RAW photos from my camera converting them to DNG format. As I shoot RAW+JPG LR is nicely keeping the pair of DNG and JPG of imported photos.

When migrating the catalog and photos to Lightroom CC I've configured LR to keep originals on the same NAS. The migration went ok so all my photos have been copied to the new originals folder and are visible in Lightroom CC for desktop application. Total number of imported photos was over 56000. 37000 were synchronized with the cloud and are now visible on any device or web app but 19000 of the photos have not synchronized with the error mentioned above.

Please let me know if you need any further details or technical information, logs etc.