Then he began to restore the old Ancien Régime dioceses, or most of them, though not with the same boundaries as before the Revolution. The diocese of Pamiers was not one of those revived by Pope Pius VII in his bull "Qui Christi Domini" of 29 November 1801. Its territory was assigned to the Archdiocese of Toulouse. Under the Concordat, however, Bonaparte exercised the same privileges as had the kings of France, especially that of nominating bishops for vacant dioceses, with the approval of the Pope. The practice continued until the Restoration in 1815, when the privilege of nomination returned to the hands of the King of France. In accordance with the Concordat between Pope Pius VII and King Louis XVIII, signed on 11 June 1817, the diocese of Pamiers was restored bringing together territory from the ancient Diocese of Pamiers and the Diocese of Couserans, along with the larger portion of the former Diocese of Mirepoix and Diocese of Rieux, and a deanery of the former Diocese of Alet. The Concordat, however, was never ratified by the French National Assembly, which had the reputation of being more royalist than the King, and therefore, ironically, Napoleonic legislation was never removed from the legal code (as agreed in the Concordat of 1817) and the terms of the Concordat of 1817 never became state law. Louis XVIII, however, nominated François de La Tour-Landorthe on 13 January 1823, and he was approved by Pope Pius VII on 16 May 1823. The 1905 French law on the Separation of the Churches and the State disestablished Catholicism as the religion of France, ended all state subsidies to religious organizations, cancelled all salaries and pensions paid to the French clergy, required the repayment of all loans made to churches and church organizations, and required that all property not subject to a religious foundation created since the Concordat of 1801 was to be turned over to the government. Pope Pius X protested that this was a unilateral abrogation of the Concordat of 1801. Diplomatic relations between the French Government and the Papacy were terminated. A decree of the Holy See 11 March 1910, revived the titles of the former Sees of Couserans and Mirepoix. and annexed them to the title of the Bishop of Pamiers.