https://www.scconline.com/blog/post/2018/10/23/amendments-that-are-consequential-and-do-not-change-the-nature-of-suit-can-be-allowed-at-any-stage-of-the-suit-before-the-delivery-of-judgment/
Amendments that are consequential and do not change the nature of suit, can be allowed at any stage of the suit before the delivery of judgment