If you're wondering why my file name is more than a simple _12345.RW2, that's because in Lightroom Classic, and in Aperture before that, I always renamed my files on import with a long, detailed, complex naming scheme. From the Info panel, right-click on File Name and choose Copy.In brief, you're going to copy the original file name, search for it in the Finder, and re-import it. Let's get started.

Super weird, but we're dealing with a migration problem here, so it's safe to say that the missing original problem may not be the only problem. But it's still worth trying, because one curiosity I found a few times is that the original did in fact live somewhere in the local Lightroom CC library. If you've thrown that away, you may actually have a real problem, where your originals may truly be lost. These instructions assume that you still have your Lightroom Classic masters located on a hard drive somewhere. Adjustments made to the image previously will be retained, and they will still be in any albums they were added to. However it turns out that if you import an image that was previously imported, but the original is missing, Lightroom will actually match them up. Unlike Lightroom Classic and Aperture, Lightroom CC does not have an explicit “reconnect” command. You can also visit to see your entire master Lightroom library.

This means that whatever is in the Cloud (after all syncing is complete, of course) is the true status of your photo library. It's important to understand that with Lightroom CC, the Cloud is the “truth”.

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