What happened is I imported them to this catalog, but then edited them on another computer, and deleted all the unwanted photos. Now, on the initial computer, all the unwanted photos are showing up as missing (of course, since they were deleted). I think what I'll do is just delete all the images from that folder on the first computer, and re-import them. Then it'll only re-import the files that I actually still have. It's a work-around, but I think it will work. Rob, do you see a smarter way?
If you delete and re-import you'll lose all edits unless you have xmp saved.
If you delete and re-import you'll lose all edit history (and other file associations, like collections, publish services stuff, virtual copies, stacking...) even if you have xmp saved.
So, in general, it's best to "reconnect" rather than re-import, if possible.
If the catalog is correct, but current locations of photos files is not, then use Relocation Services to resolve.
If the current locations are acceptable, and you just want the catalog to find them in their present locations, then the usual native Lr method for finding missing photos will do the job - dj-paige has the link for you.
Yes! I would prefer to find the missing photos as you suggest. That's my original question. Is there a way to show, in that folder, just the missing files. Otherwise, they're all mixed in with the non-missing images, and I have to go one-by-one to delete them. That's time consuming. The "find missing photos" command shows all the missing photos in the entire catalog and I want to see just the images in one particular folder.
Is there a way to show, in that folder, just the missing files.
1. Find all missing photos - they will be rounded up into a collection, which will become the active source.
2. Filter images to confine to those in folder of interest.
Note: you will need to specify folder of interest, since it won't automatically detect a selected folder...
1. Find all missing photos, and drag into a regular collection, so collection name can be used in a filter/smart-collection.
2. Select folder, and filter images to confine to those also in the missing photos collection.
Note: unfortunately, folder and collection names are only available in smart collections, not lib filters.
Even so, this sort of thing was super-easy in Lr4-, because selecting a "filtering" smart collection and a folder narrowed (filtered) the photo set. Adobe screwed up Lr5 by removing the ability to use smart collections as folder filters - now multiple photo-source selections can only widen the photo set (you get all photos from both sources). - thus making this sort of thing harder and less straight-forward.
Still, there are ways...
Here is an example using approach #1 and text-meta plugin:
Note: it's the "all missing photos" collection being filtered by folder path.
But now that I've done all this work, why not just select all missing photos and remove them from the catalog? i.e. why do you need to do it folder by folder?
Hint: to remove from catalog whilst viewing collection, use splat-delete:
* Windows: Ctrl-Alt-Shift-Delete
* Mac: Cmd-Option-Shift-Delete