Adobe Photoshop Lightroom 2

The best solution to this problem is to avoid it completely and only rename your files in Lightroom; reconnecting renamed files is tedious—you must do each one individually.

The steps are the same as reconnecting moved folders and photos. The only difference is that you’ll have to repeat the steps over and over for each renamed photo. Lightroom has no way of knowing what the new name of each photo is unless you tell it and confirm it each time.

If you have lots and lots of renamed photos, it would probably be easier to rename them back to the original name outside of Lightroom (use the same application you used to change the name). This way Lightroom will simply reconnect to them as if nothing had changed. Then, you can rename them properly from within Lightroom and swear to yourself that you’ll never do that again.