I do not know if this is a bug but here is my question:
"Warning! if you loose your moogle storage slip while storing a corresponding item, you will be forever unable to retrieve that item!"

I was told there is one point you could toss them, now you can't while storing an item. That situation would make this message a bug. If that is not the case I want to know if this system is truely unsafe so you risk loosing items while using this storage system.