export properly multisite database

I am trying to export a multisite

It seems that the database is being exported not in full

I export database like this:

I go to myphpadmin
enter the correct database
check all
export
custom
from "Object creation options" I ad the statement: "Add DROP TABLE / VIEW / PROCEDURE / FUNCTION / EVENT / TRIGGER statement"

It seems to be exporting only the minisites database or else.

What am I doing wrong? Is there a better way to do it?

Thanks!