I have a slightly buggy SD reader which sometimes operates in read-only mode. Occasionally I perform edits in camera raw, open in photoshop and export the file, only to discover the xmp metadata from the edit wasn't saved to the card. Is there a way of implementing an automatic cache or history of the past handful of camera raw edits, giving me an opportunity to reapply them to the original raw files once I've reinserted the SD reader?