A common way to migrate version control data from one VCS to another is by using the fast-export / fast-import method—export the content of the source VCS by using fast-export, and import it into the target VCS using fast-import. The data format used by fast-export / fast-import is VCS-agnostic; in this way, it is possible to migrate from any VCS to any other, as long as they support this technique.
In this section, we explain how to export VCS data of other systems by using fast-export, and then how to import that using fast-import into Bazaar.
The plugin to import the version control data that was exported by using the fast-export method is named
fastimport, typically in a package ...