Whether an ongoing project approved prior to April 01, 2021, may be implemented by an implementing agency not registered on MCA21 portal?

Since the requirement of registration has commenced from 01st April, 2021, any ongoing project which has been approved between 22nd January, 2021 and 31st March, 2021, may be carried out by an implementing agency which is not registered in MCA21 portal. 

However, the unregistered implementing agency is required to register in MCA21 portal before undertaking any new project after 01st April, 2021.