In an effort to cull and consolidate some different lightroom catalogues, I did some merging and deleting, and I've ended up with sort of a weird situation. I have about 10k photos that I converted at some point to .dng, but the catalogue I held onto is looking for .cr2. For every photo, it's as easy as pointing to the new file, but I can't do that individually for every shot in the library, and the "find nearby photos" thing doesn't work because they actually have different names. I don't want to just re-import the photos, because I'll lose all the tags and edits. Any suggestions welcome.
Please follow the below steps.
> Navigate to Library module.
> In the left hand side, you will be able to see Folders panel
> Make a right click to the folders with the question mark and choose Find missing folders
> Navigate to the folder which has all the images
> Click on Select folder
Lightroom will find the images in that folder for you.
Let me know if this helps.