What happens if I use multi-db AFTER I installed support system?

Hi, just wondering if the support system will still work if i install multi-db plugin at a later date? Is it easy to configure for the changes?

Was wondering when I read the notes on this page https://premium.wpmudev.org/project/support-system/#usage

Quote:
If you are also using the Multi-DB plugin, you need to add the global table lines to the db-config.php file in Multi-DB BEFORE installing the Support System plugin or running the sql.txt in Multi-DB