To best assist and clarify, are you saying you are missing users in the alarm panel and ADC website too? Or are you just referencing the lock?
If you mean you had restoral commands pushed to the new panel, Z-wave devices like the lock are not included in backup restore commands.
If there are old codes in the locks which are still active, it would be good to delete the locks from the panel, factory reset the locks, then relearn them into the panel. This will clear any old codes and after learning them in you can sync your ADC user codes to them as necessary.