You better play safe if that is possible and okay with the new company where you propose to join. You send resignation letter after completion of the required 1 year period and move along as the existing experience may also count in your career.
There is likelihood of your benefits being revoked if you send in your resignation otherwise. Exact date after 1 year is your choice at least technically you will not be required to pay back to the company.
Thanks and Regards
7th May 2019 From India, Hyderabad