Are there any other constitutional amendments or agreements related to the State of Tripura not mentioned in the text?
Based on the given context, it is difficult to determine if there are any other constitutional amendments or agreements related to the State of Tripura that are not mentioned in the text. The text focuses primarily on the territories referred to in Part II of the First Schedule to the Constitution (One Hundredth Amendment) Act, 2015, and their relationship with the territories referred to in earlier amendments or agreements.