A page announcing the change is not the change. Request the signed amendment, the consents required by the governing documents and applicable law, and the funds-flow records. If a notice says it comes from a government source, verify the channel independently before relying on it, especially where its content conflicts with your other papers.
Collecting evidence that matches the governing terms
Who must sign an amendment is set by the partnership or operating agreement and applicable law, not by a general rule that everyone signs. Read the clause, then collect exactly the consents it names. Government notices can contain errors; a conflict is investigated and addressed, never repeated into your record as fact. Corporate documents supplied should meet the actual requirement rather than an assumed recent extract.
Source explains how the money was earned; path explains every account it crossed on the way to the project. A file that proves an impressive source but skips two intermediate accounts is incomplete.