When does plesk refresh qmail/users/assign file?

[GerdK]

I have installed the TMDA challenge-response filter on my server. Therefore i had to do some modifications to /var/qmail/users/assign

For example for the email address foo@example.com the challenge response system also needs to receive emails to foo-*@example.com.

I changed

=2-foo:popuser:110:31:/var/qmail/mailnames/example.com/foo:::

to

+2-foo:popuser:110:31:/var/qmail/mailnames/example.com/foo:::

Today i noticed that my customizations are gone and challenge-response mails are rejected.

Can i avoid this by adding a separate line for the wild-card adresses like this?

=2-foo:popuser:110:31:/var/qmail/mailnames/example.com/foo:::
+2-foo-:popuser:110:31:/var/qmail/mailnames/example.com/foo:::

Or will this line also be deleted by plesk scripts?