cpbackup question how does this identify accounts to backup? is this alphabetically?

[sharmaine001]

How does cpbackup backs up account? is it alphabetically based on domain name?

This is because cpabackup has cancelled and have backed up 250 accounts already. i have 600 accounts. it took several hours to back up this 250 accounts i dont want to repeat it again

So i just want to terminate the accounts that have been backed up so i can start cpbackup again without these 250 domains

[MikeDVB]

I believe it's alphabetical from the output of "ls /var/cpanel/users" but I could be wrong.