3DExperience vs CATIA connector

Hello,

We are using CATIA v5 r28 with 3DExperience R2019x.

Few of our users have 2 different ENOVIA toolbars, which come from the connector, namely:
- ENOVIA v5
- ENOVIA v6

How can it happen? Get few of them in the past 2 different toolbars installed? How can it be handled by the CATIA and 3DEXPERIENCE?

During saving the save command runs from ENOVIA v5 toolbar, the Advanced Save with PDF runs from ENOVIA v6 toolbar.
 

The users wants to use Advanced Save with PDF command, because it is useful, however not all of them have ENOVIA v6 connector installed.
Can you clarify it?

Thank you