When you are working in a Farm and open the Feed window you will notice that some feeds in your Farm Feedbank have a red circle with a white line through it. This symbol means that that feed originated in a feedbank created by another user, (that user can be AMTS).
When you see this symbol you know you are seeing the feed in its “pure” form. It is locked and cannot be edited. It is possible to change the analysis; to do so you will need to change the name of the feed and make it your own.