Handling a merger and subsequent ticker rename(s)

Afterpay, which originally listed on the ASX as APT, got bought out by Block in 2022. The APT ticker was then retired (data in Navexa ends here). Shareholders of Afterpay were given a different number of shares in Block, which was then listed as SQ2. The SQ2 ticker was then retired (data in Navexa ends here). Now Block trades under the ticker XYZ. After I import my purchases of APT, how can I handle the merger and rename of stock? Sharesight guide for reference: https://help.sharesight.com/au/how-to-handle-the-afterpay-and-block-merger/#:~:text=Summary,equivalent%20(SQ%3ANYSE).