I googled ' Plebiscite of 1938 - the church's advice to Austrians'. I found this:
Solemn Declaration " We, the Bishops of Austria, declare of our own free will, and in conformity with our deepest convictions that which follows: We are glad to recognise that in the domain of racial and economic reconstruction, and also in that of social policy. the National-Socialist movement has accomplished marvels for the people and the German Reich, and notably for the very poor. We are equally convinced that the National-Socialist movement has warded off the (Wager of destructive and atheistic Bolshevism
They went on to advise the Austrians to vote for the German's proposals.