This to become use of softwares old. On the migration/conversion recommends to be necessary the periodic transference of digital material of one given to configuration of the hardware/software for another one, or of a generation of technology for another subsequent one. In the migration for analogical supports, the author contextualiza on the reproduction of a digital object in paper, microfilm or any another analogical support of long duration. In update of versions, the author appraises that he consists of bringing up to date the digital materials produced by one determined software appealing to a more current version of the same. In conversion for competing formats, Blacksmith suggests the possibility of that the objects are converted between analogous formats, independently of the application used in its creation. In the part of Normalization, it she regulates that the reduction of the number of distinct formats is the ideal. The future interventions to the level of its preservation could be carried through of simpler and economic form. The Migration the order indicates that instead of the conversions to be applied to the object most current, these always are applied to the original object that is oldest.

In distributed Migration it says that in this type of migration, a set of conversion services exists that if find accessible through the Internet and that they could be invoked remotely appealing to a small application-customer. ' ' Encapsulamento' ' it is a term given for the author who appraises the form to preserve or to keep information next to objects of unchanged digital objects until the moment where if they become effectively necessary, to allow the future development of converters, visualizadores or emulators. The Rock of digital Rosetta is a term to represent the descodificao technique to recoup digital objects for which enough information does not exist on the subject. Of this form, object samples are used that are representative of the format that if it intends to recoup.