Unable to alter php/apache configuration in power user view

[LoïcA]

Altering PHP/Apache configuration in PLESK power user view won't bring any actual change to the domain configuration. Instead, in the sub-domain conf directory, I can find a list of several xxxxxxx.xxxxxx_httpd.include files.

Restarting apache and plesk did not solve this issue.

Reproductions steps
1/ Logged in Plesk
2/ Went to my domain's power user view
3/ Clicked on "Website and Domains"
4/ Clicked on one of my subdomains
5/ Selected "Apache" instead of "FastCGI" in "Exec PHP as..."
6/ Waited 10 minutes

Now, PLESK sees "Apache" instead of "FastCGI" but phpinfo(); reveals that PHP is still running as FastCGI.

Actually, I'm not even able to suspend the domain or to disable "safe mode" : modifications are registered in PLESK database but aren't applied to Apache / PHP.

Configurations files seem to be created in /var/www/vhosts/subdomain/conf (for there are many many files now) but aren't processed by PLESK apparently.

Any solution ?

Thanks !

Edit : PLESK 10.4.4 with Debian