Grayed-out trades?

[tehuti88]

See the creature on the far right (Kayra) with the gray lines through it? Also, it's unclickable; you can't go to its profile from the trade page. What does this mean?

[Gaki.]

See the creature on the far right (Kayra) with the gray lines through it? Also, it's unclickable; you can't go to its profile from the trade page. What does this mean?

Hi !
That means that the creatures are already in an other trade :3
Check the trades that you have send before, I'm pretty sure you will find these creatures !
It's a kind a "security" to avoid sending two trade with the same creatures inside ^w^