Change Trackback URL

Hello everyone,

for complicated reasons I have a WordPress2 integrated into Joomla with JD-Wordpress-Plugin.
However, this plugin can’t initiate trackbacks ??

I figured a workaround by manually installing a standalone WP2, changing Database-configuration to match the JD-WP settings and then use the /wp-admin/execute-pings.php.

This works perfectly, however, the URL which should lead back to my Jooma-site is not correct:

This is what is sent to the other site:
“https://www.heiko-heider.de/php-cgi/joomla/components/com_jd-wp/?p=21”

This is what I would need:
“https://www.heiko-heider.de/php-cgi/joomla/index.php?option=com_jd-wp&Itemid=31&p=21”

YOU SEE, there is not much difference, especially as up to ?p=21 the URL always remains the same (this is what calls the JD-WP-module).

Can you please help me to somehow modify the code in my WP2 standalone installation so that it replaces the wrong static code with the correct one.
I just don’t know where to look. But I think it can’T be too much, because only

“/components/com_jd-wp/”

need to be replaced by

“index.php?option=com_jd-wp&Itemid=31”

which for all blog entries will remain the same.

PLEASE HELP.

Heiko