In order for a member of a secular institute to transfer to another secular institute, the prescripts of cann. 684, §§1, 2, 4, and 685 are to be observed; moreover, for transfer to be made to a religious institute or to a society of apostolic life or from them to a secular institute, the permission of the Apostolic See is required, whose mandates must be observed. _________________ (n: indicates that the text corresponds to a new version or a new paragraph) [Earlier version. Cf. Apostolic Letter issued 'Motu Proprio' Communis vita (19 March 2019) | Francis]
Source: Code of Canon Law (Vatican.va)