Update User Profile in Joomla Duplicates user in Moodle

Hi All,

I am currently experiencing the following issue:

When a I update a user in Joomla, for example their email address (Which is also there username) and the user then logs in to our site, a second account is created for them in Moodle. As a result there moodle ID is different and any courses that they were enrolled in are now not visible.

I am currently using R6 on my live site but in the process of upgrading on our dev site. I would just like to know if:

1. This is an issue with R6
2. or whether I have a setting that is incorrect in either Joomla, Joomdle or Moodle configuration.

Regards,

I remember something like that happened for usernames with special chars (not sure about @),but I don't know in which version.

If you upgrade your dev site, you can there and see if problem is solved.