i am loading modules (deflate, headers and expires) by editing /etc/sysconfig/apache2

but when i check /etc/apache2/sysconfig.d/loadmodule.conf i can't see above modules.

i checked using phpinfo.php also and they are not listed there also.

if i change /etc/apache2/sysconfig.d/loadmodue.conf by adding
LoadModule deflate_module /usr/lib/apache2-prefork/mod_deflate.so
they work one time but when i restart the server they are not loaded.
please help