I have recently had to restore my laptop from a slightly older backup and this involved reinstalling an older backup of LR. As such, all the sorting of photos into collections that I had done previously was all gone - I still have the photos, they're just not grouped in the smart collections I had them in any more. As these collections were all synced to LR CC/mobile, they are still in their collections there (CC).
Is there a way to have the photos put back into their collections in LR Classic, considering they're still sorted in CC?
Or is the only way to do it going to be slowly going through a few thousand photos and re-sorting manually again?
Both LR's are up to date versions, and I'm using a MacBook Pro, if that's helpful.
For any help, thank you!
Unfortunately, it's not really possible. As soon as you start to sync the restored catalogue, I am pretty sure that it will update LRCC and clear out the collections.
Assuming that you don't enable sync for now, it might be possible to put the photos back into the correct collections, then enable sync. I think I tried this once, and the sync process corrected itself, but I wouldn't depend on it. Overall, I think you would be best advised to make a fresh start with syncing to LRCC and maybe also backup your catalogue more frequently.