This other modification is intended to change the format of the files, by segmenting the data on the one hand and information on the other, for any software used for their creation. We then proceed to the migration to a new format meeting the standards guaranteeing greater durability.
Due to the large number of interactions between softwares, the technique can sometimes cause information that is difficult to identify to be lost.
In addition, migration is most often irreversible because of the separation of data from their creative technological environment.
This migration concept requires tracking changes to software versions. It is indeed essential not to upgrade to a higher version where compatibility would only be provided for a defined number of versions.