 Together with many Catalan industry tycoons taking refuge in the Gipuzkoan capital, Bau engaged in plans to re-create regional economic institutions once Catalonia would be retaken by the Nationalist troops.He was offered presidency of , the regional agricultural organization, but declined quoting his hostile relations with Serrano.Indeed, the internal Falangist document denounced him as one of the leaders of local "plutocratas y alta burguesia" who conspired against the national-syndicalist state.