I may be wrong, but I believe that has something to do with the client changing art based on the "season" of the map. Its the same change it performs when making fel look desolate. Try changing the season of whatever map those images are from. If it works then theres not much you can do without making the new setting permanent, or adding the small egg pile to a new art slot and then placing it on your map. The client is hard coded to change only specific slots 9though I have no possible explanation as to why eggs would need to change). Worth a shot anyway!