If you want to transfer G Suite data into another G Suite account, you can use the
G Suite Backup Tool. It has many advanced features and a simple GUI so that non-technical users can use it easily. The tool helps users to take backups of G Suite emails to MBOX, EML, EMLX, MSG, PST, PDF, and HTML. It also allows users to directly transfer emails from Gmail to various email clients. The demo version is also available so that you can use the software before paying for it.