what should i do in this situation

hello
im new to vbseo and i want to do my first installation of vbseo , so i would like that you help me on that .

In my forum folder i have and .htaccess file concerning the vbseo_sitemap which i have installed time ago from vbulletin.org . so i see that when i will install the Vbseo this file will be Replaced by the new .htaccess of the VBseo .

in the Old .htaccess we can find :

HTML Code:

RewriteEngine On
RewriteRule ^(sitemap.*.(xml|txt)(.gz)?)$ vbseo_sitemap/vbseo_getsitemap.php?sitemap=$1 [L]

and in the New .htaccess

HTML Code:

# Comment the following line (add '#' at the beginning)
# to disable mod_rewrite functions.
# Please note: you still need to disable the hack in
# the vBSEO control panel to stop url rewrites.
RewriteEngine On
# Some servers require the Rewritebase directive to be
# enabled (remove '#' at the beginning to activate)
# Please note: when enabled, you must include the path
# to your root vBulletin folder (i.e. RewriteBase /forums)
#RewriteBase /
#RewriteCond %{HTTP_HOST} !^www.yourdomain.com
#RewriteRule (.*) http://www.yourdomain.com/forums/$1 [L,R=301]
RewriteRule ^((urllist|sitemap_).*.(xml|txt)(.gz)?)$ vbseo_sitemap/vbseo_getsitemap.php?sitemap=$1 [L]
RewriteCond %{QUERY_STRING} !vbseourl=
RewriteCond %{REQUEST_URI} !(admincp/|modcp/|chat|cron)
RewriteRule ^(.*.php)$ vbseo.php?vbseourl=$1 [L,QSA]
RewriteCond %{REQUEST_FILENAME} !.(jpg|gif)$
RewriteRule ^(archive/.*)$ vbseo.php?vbseourl=$1 [L,QSA]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !^(admincp|modcp|clientscript|cpstyles|images)/
RewriteRule ^(.+)$ vbseo.php?vbseourl=$1 [L,QSA]

So should i add the first content of the file to the new one ? or just replace it and vbseo site map will be still working ?

SOrrry for my question ? and thank you all for helping ?
and i would like that you give me any suggestion that will help me in Vbseo
thank for your support

Just replace it. The vBSEO version also includes sitemap directives.