After the refit was completed, "São Paulo" picked up ammunition in Gravesend and sailed to Cuba for firing trials. Seven members of the United States' Bureau of Standards traveled with the ship from New York and observed the operations, which were conducted in the Gulf of Guacanayabo. After dropping the Americans off in Guantánamo Bay, "São Paulo" returned home in early 1920. August 1920 saw the dreadnought sailing to Belgium, where King Albert I and Queen Elisabeth were embarked on 1 September to bring them to Brazil. After bringing the royals home, "São Paulo" traveled to Portugal to bring the remains of the former emperor Pedro II and his wife, Teresa Cristina, back to Brazil.