A system and method for updating versions of content stored in a storage device. The system includes an update module for obtaining a conversion element and a small delta, and a converted old items generator for generating converted old items by applying the conversion element to items of an old version. The system further includes a data entries generator for generating data entries based on the modified data entries and on the converted old item, and a new version generator for generating a new version of content by applying the commands and the data entries to the old version.