Custom License Field - license expire date updated automatically?Answered

We have a custom license field - license_expire_date on which the license will expire. We have some users in which they activated when this field was set to date A, but we would now like to shorten to date B. 

To confirm, the license field is re-checked / updated when the license servers are contacted, such that if we change the license_expire_date field through your website to date B, the license will expire on date B even though the license was activated when the field was set to date A (obviously excluding offline-activated licenses).

Many thanks