Sec. 8. If a federal estate tax return is filed for a decedent's estate and if a tax is imposed under this article as a result of the decedent's death, the personal representative of the decedent's estate or the trustee or transferee of property transferred by the decedent shall:
(1) concurrently with the filing of the federal estate tax return file a signed copy of that return with the department of state revenue; and
(2) file a copy of the final determination of federal estate tax, whether issued by the internal revenue service or a federal court, with the department of state revenue within thirty (30) days after it is received.