Copying my Live site to a Test site

Thanks Chris
What about installing two different versions of Joomdle on the same site?
I need a test system and I installed another Joomla in a subfolder and another moodle in a different subfolder on the same site
Now I would like the new Joomla and the new Moodle to share users via Joomdle.
How can I be sure they do not interfere with the other Joomla and Moodle installed in the same site?
What must be unique in every Joomdle installation? should the test token be different from the production token? and what about the specific user for Joomdle? Should also this be different from the other system?
In other words I would like to copy the other Joomdle configuration making only necessary changes
Thanks a lot

Joomdle does not permit a one to many relationship between Joomla and Moodle or Moodle and Joomla. Ie One Joomla <--> One Moodle.

Since you are copying the production site to test. Personally I would:
- Place on a test domain (not to confuse with the production and accidentally delete the wrong files)
- Generate new tokens
- Change Joomla and Moodle URLs in the Joomdle configuration
- Change the password of the super admin in Joomla and Moodle so that you don't accidentally log into the backend of the wrong site. Ie keep the same login but change the password
- Delete live users as you would not want to: accidentally send them a test email, or get hacked and give away customer details. Not saying that you will, but I notice that security on test sites tends to be a little weaker.
- Create a new blank homepage with no modules and menu items except login. Thus google does not find the site and disturb your ranking or create links to the test rather than production.

OR
- Install locally where it will not matter

Note: I have moved your post to a new thread as it is not related to the previous discussion.