Reset client count on ispconfig 3

[WeaponX]

Thanks in advanced.

I have a new server with ISPConfig 3 and i did few test accounts (clients with web and ftp). I am looking to reset the client database to start from scratch again instead of continuing the client count.
For example: I Removed all clients and web information from ISPconfig 3 and all fields are empty. i also when into the database to remove all information there of all the clients. Also, i removed everything releated to the clients in /etc/passwd /etc/groups.

Then i created a new client with site and domain. Instead of giving client1 group1 web1 it gave me client5 group5 and web5.

How can i reset and start from scratch?

Thanks