pacecal on "[Plugin: All-in-One WP Migration] MariaDB vs MySQL? database proces hangs"

I'm running my WP-site on a payed host (A), let's say: wwww.mydomein.com.

I'm running a backup on a synology NAS (B), let's say: http://www.ipadres.com\mydomein

MySQL 5.1 is running on A
MariaDB is running on B

From A to B works
From B to A not, database proces is hanging.

What can I do to fix this?

https://wordpress.org/plugins/all-in-one-wp-migration/