./console exp:expmigrationconvert --help
./console exp:migration:convert --help
php bin/php/expmigrationconvert.php --help

Convert migrations of the migration bundle of the Symfony based platform
Reads a YAML migration of the bundle (a list of steps with type, mode, match, attributes and
references), or every .yml and .yaml file of a folder, and writes a YAML migration of Exponential
for each: content, content_type, content_type_group, location, role, section, user, user_group,
language, tag, sql, reference and trash steps convert; "reference:<name>" becomes ${ref.<name>}.
What does not convert (PHP and service calls, HTTP, mail, processes, loops, files, keys without a
counterpart) is never guessed: it is listed at the top of the new file, to be done by hand. Every
converted step is checked by its step type. The new file keeps the date and time of the old name and
goes into the site's migrations directory or, with --source=extension:<name>, the extension's. Without
--apply it shows the files and writes nothing; an existing file is never replaced.

./console exp:migration:convert var/import/20240115093000_create_news_folder.yml
./console exp:migration:convert var/import/MigrationVersions --apply
./console exp:migration:convert var/import/MigrationVersions --source=extension:expnews --apply