This means your security/background is going on as the notes are 70days old. You might receive a re-medical as the time of medical expiry is coming close. If the decision is made within May, you might be asked to land before 23 July.
Did you confirm when did your background check started?
Didn't confirm about when exactly background started. Just found it during my habit of daily checking of account.
Also this change was right after 2 days of raising CSE