Once you re-link one image (by pointing to its current location) InDesign will re-link all images automatically if they are in the same directory as first image.
Thanks for your reply but that is not exactly what I mean.
What I mean is if you can relink your images in several Indesign-files at the same time?
I have made a book-file of 50 separate Indesign-files in which I have to relink all images.
Now I have to open each file to relink the images, but is there a way you can do that with several Indesign-files?