Thank you..I agreeIt was received somewhere.
Seriously, this is not worth spending too much time thinking about. Probably these ecas and gckey pages are generated from ancient database structures that only have one or two flags - on or off. One of them means received. In some narrow internal sense. It could just as easily say true or false , yes or no, like a database query., It's just a computer bit. The change means something happened and not much more.