Sir,
Section 16 (2) of Model GST Law provides that " a person who has applied for registration under the Act within thirty days from the date on which he becomes liable to registration and has been granted such registration shall, subject to such conditions and restrictions as may be prescribed, be entitled to take credit of input tax in respect of inputs held in stock and inputs contained in semi-finished or finished goods held in stock on the day immediately preceding the date from which he becomes liable to pay tax under the provisions of this Act.
If this section is retained in the ensuing GST Law to be enacted by the Parliament then the registrant under GST Law is eligible to take the credit accrued to him under erstwhile laws.