You can access to your old storages using Kafra cards (the kafra herself is offering this service). You can get those cards from the kafra shop or from players (http://ragial.com/it...al/HbXm5a42iCTy)
The 3rd storage is the one from the Valk server. I don't remember which one they kept, so if your stuff is not on the current storage and you are not coming from Valk, then everything is in the 2nd storage
I suggest you to transfer it with a merch class and its empty cart
Nothing has been wiped during the merge of the 3 servers