Completing Lightroom Cloud to Lightroom Classic migration

Question

I'm in the process of migrating from Lr (cloud) to LrC (classic). The initial Lr -> LrC sync completed, now I have it paused. From here I'd like to duplicate the photo organization I had on Lr on LrC. I'd also like to replace all the full-res/original photos on Lr with smart preview versions synced from LrC. I'd like all the photos in Lr so I can continue to use sensei search and people face recognition there. It's my understanding that those features will work with smart previews. Here's the steps I'm thinking of taking -

in LrC
unsync all the 'From Lightroom' collections
duplicate the Lr folders as LrC collection sets
move the 'From Lightroom' collections into these new collection sets
in Lr
delete all folders, albums and their photos
delete all the photos in All Photos (after exporting unsynced videos, in case they get deleted too)

start sync on LrC

Any thoughts, suggestions, or words of caution?

One more question... Is there a way to see what LrC photos aren't in collections, in case later I want to delete some photos from 'All Synced Photographs' (and Lr)?

johnl03 · Accepted Answer

I'm going to experiment a bit more with sync, then give it a try. I feel safe with all my original photos in LrC now.

Just to follow up, I basically just followed this well written tutorial by 'The Lightroom Queen' - How do I remove photos from Adobe Cloud sync? Here's the link:

https://www.lightroomqueen.com/remove-photos-cloud-sync/

This left me with only smart previews from my LrC collections on Lr (cloud). At this point you can drag additional photos from All Photographs into All Synced Photographs to sync them to Lr as smart previews. People and (sensei) search work on the smart previews. Before I started the photo removal process I did organize my collections into collection sets to mirror my albums/folders on Lr.

One problem I ran into was sync getting stuck on Lr a number of times. I was able to clear it by running a diagnostic reporter (now called Sync Issues Report after the latest 5.2 upgrade).
Preferences->Account <hold down option key on mac> Sync Issues Report
In the DiagnosticLog, click 'Lightroom Helper Diagnostic Log', then 'Syncing and Error Assets'. Track down the problem photos in Deleted and restore them and sync will complete. Then Delete them again so the problem doesn't reoccur.

Rob_Cullen · Answer

Migrating 'Cloud > Classic'I think you have the method basically understood, but it might help to read the conversation at-https://www.lightroomqueen.com/community/threads/deleting-photos-from-lightroom-cc-cloud-but-keep-the-sync-and-originals.35843/#post-1235722I like the words of the Lightroom Queen- "That's where it gets a bit more messy,.." but Victoria Bampton has some good advice.

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