Until the concerned regulation changes, you cannot conclude the cancellation of the submission of Half Yearly Returns. After the computerization of ESIC, the following suggestions I can give:
1. As of now, the submission of RC at Branch Offices is not required, but you should ensure the submission of Self-certification online by using the "SELF CERTIFICATION" link on the ESIC employer's homepage.
2. Most employers are ignoring the main provision of the submission of Annual Returns, i.e., Form-01(A), which is supposed to be submitted every year by 31st January. Failing to do so can lead to prosecution action, so it's better to submit the Annual return using the link "ANNUAL INFORMATION RETURN" available on the ESIC employer's homepage.
All the best.
Regards,
Rakesh