tita1948 wrote:
Ok let's say you moved a photo to a collection. Now you want to either send it or maybe edit it, or even remove it. You can't remove a photo from collections. When I try to edit it I get the message that 'It's off line or missing". How can I get it back to where I can do something with it?
You're not MOVING it to a collection, you're making an index to selected images.
The error means that LR doesn't know where the file(s) is/are. You have to help it re-discover them.
Don't forget to search in any secondary or external drives you may have.