oh, ok I think I finally understand what you mean then, sorry.
I also think I see the problem.
If you go to
/var/www/vhosts/<domain>/conf/vhost.conf
and then search for the doc root
cat httpd.include | grep '/var/www/vhosts/'
You see it show up in a few places.
One of them should look like:
DocumentRoot /var/www/vhosts/<domain>/httpdocs
Now you can change that and it will take effect once you restart apache. But the problem is that a lot of the times when psa restarts, reboots, or the domain has a change that occurs in plesk the httpd.include file gets overwritten each time - so all changes are lost.
You will need to put the changes into a vhost.conf file there instead and then do the reconfigure command
/usr/local/psa/admin/bin/websrvmng -u --vhost-name=<domain>[/QUOTE]
I think you just have to add
DocumentRoot /var/www/vhosts/<domain>/httpdocs/folder
But to make this overly simple, wouldnt it just be easier to move the web site to the root instead?