@gt
Direct Casts are not part of the protocol at this time and they are not actually related to the storage enforcements of the Farcaster protocol. You have full control of your public posts.
Your Direct Casts are deleted — due to a Warpcast specific policy. We implemented this policy (and announced it many times) because we have a strong desire to move the private messages to a sufficiently decentralized layer and there is no way for us to move all the messages as we have to apply some storage rules. With that being said I understand it is probably a frustrating experience to lose older private messages.