Negative User ID in Joomla

Using joomdle 1.08, and moodle 3.2.1+, and joomdle enrol 1.0.6

In the joomdle connector in joomla where it lists users, I have some users with a negative id number. When I look for that in my joomla user list, that person doesn't appear.

In moodle, that user by similar email exists, but I cannot delete that user. Only modify the profile.

I'm not sure how to fix this particular case.

If a user shows in joomdle user list with a negative id, it just means that the user exists in Moodle, but not Joomla.

Thanks. Now the question is how to fix it.

1. In Joomla ->Components->joomdle->users, there is no tick box or check box next to the name to make any changes.
2. In Joomla ->users, the user with the negative id doesn't exist, as you mentioned.
2. In Moodle user -> there is only the gear symbol, not an x. I can't delete user.

The moodle user is authenticated in joomdle. . .

When I've run into negative ids before, I was able to delete the user in one or the other places.

If you have no tick box, it means user is an admin. Joomdle won't let you migrate admins, to prevent you from being locked out of Moodle.
So, it does not show ticks for admins.

Thank you for the clarity here. I appreciate it.