Good news ! We have released first version of Prime Mover plugin (version 1.0.0) This plugin is used for single-site / multisite migrations and vice versa. It also versatile and can be used as a backup plugin.
You can now download at WordPress.org repository: https://wordpress.org/plugins/prime-mover/
For documentation and support, please go to our Prime Mover documentation page.
Contact us or comment to this post if you have any questions.