The Polymarket Protocol V2 upgrade will not automatically migrate existing bets under the old Conditional Token Framework (CTF) to the new contract. Its migration guide requires trading integrators to maintain support for these legacy positions while adding separate systems for V2 positions and new trading permissions. Polymarket CEO Rajath Alex announced on October 5 that a small number of live test markets would run from October 5 to October 30, with a tentative switch for newly created markets on November 2, rather than a forced conversion of all existing bets. Polymarket app or website users do not need to perform a technical migration; they only need to complete any approval prompts displayed within the app.