Pope Benedict, in letters of 29 November 1749 and 27 June 1750, invited the two parties to come to an agreement, while for the moment the present arrangements would remain in effect.

[8] The patriarchate of Aquileia was abolished, as Article I of their convention required, and was replaced by two ecclesiastical provinces and two archbishoprics on equal footing: Udine and Gorizia.

The bishop of Pedena, Aldrago Antonin de Piccardi had been transferred to the diocese of Senj e Modruš (Croatia) on 14 February 1785, and was not replaced.

[16] Later attempts were made to suppress the see again, but the emperor decreed its preservation, nominating Ignatius Cajetanus von Buset zu Faistenberg bishop of Trieste on 12 February 1796.

Emperor Franz II finally appointed Antonio Leonardis da Lucinico as the new bishop of Trieste on 4 March 1821, and he was confirmed by Pope Pius VII on 13 August 1821.

[19] On 20 June 1828, by the papal bull "Locum Beati Petri", Pope Leo XII completed the project which had been begun by Pius VII, the reorganization of the dioceses of the Italian peninsula, Istria, and Dalmatia, whose existence had been interrupted or compromised by the French intrusions.

In 1909 Bishop Franz Xaver Nagl was appointed coadjutor cum jure successionis to the ninety-year-old Cardinal Prince-Archbishop Anton Gruscha of Vienna.

The Second Vatican Council (1962–1965), in order to ensure that all Catholics received proper spiritual attention, decreed the reorganization of the diocesan structure of Italy and the consolidation of small and struggling dioceses.