A member likes an item, or comments on it and then it shows up on their profile wall / newsfeed. They then might delete the post from their profile newsfeed ( that they liked the original post or maybe that they commented on it ). Deleting it from their profile newsfeed has also deleted every trace of the original item itself - from its group, or other member's wall, as well as other comments and likes related to that post. This can't possibly be by design?
I am running 1.7.1 and have the latest newsfeed plugin.