Lost Enchants

I dropped a Scoped fallen deathbow, level 92, into our vault at ECF knowing that a percentage of the enchants would be deducted but wanted to pass it on to another player. I don't remember exactly how many times it had been enchanted but I'm pretty sure it was over +1000. When the other player received the bow, there were NO enchants on it any longer. Please let me know what happened so we can prevent this in the future. Thanks!