combine .htaccess and Apache Directives

Hi, I want to ask, if it is possible to combine .htaccess in web-root-folder and the apache directives field in ispconfig 3.
Background: I often install Drupal, which brings a .htacces.
Normally, I put some extra stuff to this file.
Problem: sometimes on update, the .htaccess is overridden with an updated version.
Now I hope to put my add-ons in the ipsconfig 3 "apache directives-field" so they are update save.
What do I have to put there, to get the follwong?
In the original .htaccess I we already find:

Code:

<IfModule mod_rewrite.c>
  RewriteEngine on

In this seciton I want to include:

Code:

RewriteCond %{HTTP_HOST} .
RewriteCond %{HTTP_HOST} !^www\. [NC]
RewriteRule ^ http%{ENV:protossl}://www.%{HTTP_HOST}%{REQUEST_URI} [L,R=301]
RewriteBase /

Do I have to put the <IfModule mod_rewrite.c> again in the derictives field?
Do I have to include a directory part?

 

Hi Till,
thank you for your reply. Including the SEO-rewrite works fine. But if I include

Code:

RewriteBase /

this seems to be ingnored??? Do I have to do anything special to make RewriteBase work?
And, to be sure, are all the existing htaccess-rules from .htaccess still applied? In .htaccess I normally Set RewriteBase / before the existing "master" rules

Code:

  RewriteCond %{REQUEST_FILENAME} !-f
  RewriteCond %{REQUEST_FILENAME} !-d
  RewriteCond %{REQUEST_URI} !=/favicon.ico
  RewriteRule ^ index.php [L]