vHost file auto changed after a period ???

[7rdoq]

but I didn't run any change from admin panel, why it rewrites after some period?

so there's any solution to prevent this auto rewrite task?

I also added A record in DNS, but I still need this config (ServerAlias *) in httpd-vhosts.conf file, there's any solution?

Or I have this question: vhost file may still work normally if there are 2 duplicating settings for 1 site? Like settings below

Code:

<virtualhost *:80>
ServerName mymaindomain.com
ServerAlias  www.mymaindomain.com
DocumentRoot "/var/sentora/hostdata/zadmin/public_html/mymaindomain_com"
</virtualhost>

<virtualhost *:80>
ServerName www.mymaindomain.com
ServerAlias  *
DocumentRoot "/var/sentora/hostdata/zadmin/public_html/mymaindomain_com"
</virtualhost>