Kindly see the note below and check the links:
MCA has issued General Circular No. 3/ 2015 dated 03.03.2015 and clarified on practical difficulty for filing DIR-12 in case of resignations filed for all directors in DIR-11 was leading to deactivation of DSC on request from the stakeholders the respective jurisdictional ROC to allow any one of the resigned director to perform authorization for DIR 12 who was an authorized signatory director for DIR-12
Please refer to the MCA Notification referred above at http://www.mca.gov.in/
I am sharing the amendments shared from CA Durgesh Kabra.