Problem when changing 'client' for web domain

For a specific website (virtual host) I just changed the 'client' from blank to a new user I had setup on ISPconfig and immediately started getting open_basedir restriction warnings causing the webpages to not be served.
I had previously set open_basedir exceptions under 'options' - these had obviously been altered automatically by ISPConfig to reflect the new site owner (client) - clients/client5/web7 but some files were still being served from the original clients/client0/web7 which of course no longer exists, plus no matter what directories I add to the open_basedir exceptions in options, I still get open_basedir warnings that break the site....

I'm puzzled as to how I can fix this
Many Thanks

 

for example it is still looking for files on client0, so I have added client0 paths to openbasedir exceptions.
I subsequently realised that of course the symlink to client0/web7 no longer exists anyway, so why are some files being attempted to be served from this non-existent location?... Here is an example of the error message:

mod_fcgid: stderr: PHP Warning: file_exists(): open_basedir restriction in effect. File(/var/www/clients/client0/web7/httpdocs/templates//main_pages/main_2column.htm) is not within the allowed path(s): (/var/www/clients/client0/web7/httpdocs/templates//:/var/www/bsmgp/httpdocs:/var/www/clients/client0/web7/httpdocs:/var/www/clients/client0/web7/web:/var/www/clients/client5/web7/web:/var/www/clients/client5/web7/private:/var/www/clients/client5/web7/tmp:/var/www/bsmgp.org.uk/web:/srv/www/bsmgp.org.uk/web:/usr/share/php5:/usr/share/php:/tmp:/usr/share/phpmyadmin:/etc/phpmyadmin:/var/lib/phpmyadmin)

 

I have got the site working again by adding a symlink from client0/web7 to client5/web7 but I think this could be flagged up as a potential bug in ISPConfig...

 

Could be caching files and then looking for them at specific location I guess - I inherited this site so I'm not sure how it does it's thing...