If you have received an export file sent to you or if you downloaded one from a website, you can create a repository of it. The alternative would have been to create an empty repository and then import the file. But this can be done in one and the same step and is therefore faster.
An export file has the file extension * .BMT. You can also create backups to move models and objects from a repository, but that file gets the extension * .BMB.
Watch the movie below to learn how to create a repository if you have an export file.
The movie is describing