We have a problem who seems related to MDL-57345 and MDL-55905.
We have two Moodle environment using the same LDAP authentication.

We need to connect them with LTI.
The problem is that when we connect it, LTI create a duplicate account, even if the source user is the same.

I do not understand exactly the LTI mecanisms but why create a new account if the following information are all the same?

• username
• firstname
• lastname
• email

Is there a reason why we cannot reuse the account?

If we can avoid this, it would be great.

If we cannot, a problem with the duplicate account is that in the course enrol interface, both account (LDAP and LTI) are available to teacher and they cannot differentiate them.
Can we filter to remove the LTI one ?