This has happened to me about three times now and it is annoying me.  When I trade for eggs in the trading center the person accepts the trade but I don't ever receive the eggs!  It's like they just disappear into the void of Rescreatu.  My egg inventory isn't over loaded with eggs either, normally it's on the first page still.  Is anyone else getting this problem since the event started? 

The eggs are either in your Old or Spoiled section. Trades don't keep eggs from aging, so while they might appear to be fresh in the trade, it does not mean that they actually are. I would suggest only getting your eggs from the egg market if you aren't picking them up yourself.

omg I'm a doofus. Thanks, I completely forgot the little fact there are categories for the eggs.