# What happens when a user updates a Nested portfolio? The NFT representing a portfolio also represents the ownership of the underlying assets. We've implemented a data structure that maps the asset composition of every NFTs delivered by Nested smart contracts. When a user changes the asset composition of their Nested portfolio, the smart contract that manages it automatically updates the global data structure. The NFT representing the user's portfolio isn't burnt and reminted at any point. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.nested.fi/common-questions/what-happens-when-a-user-updates-a-nestednft.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.