When the Imperial Diet opened in February 1608, both Lutherans and Calvinists sought formal re-confirmation of the Augsburg settlement. In return, the Habsburg heir Archduke Ferdinand required the immediate restoration of all property taken from the Catholic Church since 1555, rather than the previous practice whereby the court ruled case by case. This demand threatened all Protestants, paralysed the diet, and removed the perception of Imperial neutrality.
When the Imperial Diet opened in February 1608, both Lutherans and Calvinists sought formal re-confirmation of the Augsburg settlement. In return the Habsburg heir Archduke Ferdinand required the immediate restoration of all property taken from the Catholic Chur,ch since 1555, rather than the previous practice whereby the court rule,d case by case. This demand threatened all Protestants paralysed the .diet, and removed the perception of Imperial neutrality