Canon 684. §1 Perpetually professed members cannot transfer from their own religious institute to another, except by permission of the supreme Moderators of both institutes, given with the consent of their respective councils.

§2 On completion of a probationary period of at least three years, the member can be admitted to perpetual profession in the new institute. A member who refuses to make this profession, or is not admitted to do so by the competent Superiors, is to return to the original institute, unless an indult of secularisation has been obtained.

§3 For a religious to transfer from one autonomous monastery to another monastery of the same institute, federation or confederation, the consent of the major Superior of both monasteries and of the chapter of the receiving monastery is required and is sufficient, unless the institute’s own law has established further conditions. A new profession is not required.
[NB see Authentic Interpretation of canon 684 §3, 20.VI.1987]

§4 The institute’s own law is to determine the time and manner of the probation which must precede the member’s profession in the new institute.

§5 To transfer to a secular institute or to a society of apostolic life, or to transfer from these to a religious institute, the permission of the Holy See is required and its instructions are to be followed.

§1. Sodalis a votis perpetuis nequit a proprio ad aliud institutum religiosum transire, nisi ex concessione supremi Moderatoris utriusque instituti et de consensu sui cuiusque consilii.

§2. Sodalis, post peractam probationem quae ad tres saltem annos protrahenda est, ad professionem perpetuam in novo instituto admitti potest. Si autem sodalis hanc professionem emittere renuat vel ad eam emittendam a competentibus Superioribus non admittatur, ad pristinum institutum redeat, nisi indultum saecularizationis obtinuerit.

§3. Ut religiosus a monasterio sui iuris ad aliud eiusdem instituti vel foederationis aut confoederationis transire possit, requiritur et sufficit consensus Superioris maioris utriusque monasterii et capituli monasterii recipientis, salvis aliis requisitis iure proprio statutis; nova professio non requiritur.

§4. Ius proprium determinet tempus et modum probationis, quae professioni sodalis in novo instituto praemittenda est.

§5. Ut ad institutum saeculare aut ad societatem vitae apostolicae vel ex illis ad institutum religiosum fiat transitus, requiritur licentia Sanctae Sedis, cuius mandatis standum est.

Canon 685. §1 Until profession is made in the new institute, the rights and obligations of the member in the previous institute are suspended, but the vows remain. From the beginning of probation, the member is bound to observe the laws of the new institute.

§2 By profession in the new institute the member is incorporated into it, and the earlier vows, rights and obligations cease.

§1. Usque ad emissionem professionis in novo instituto, manentibus votis, iura et obligationes quae sodalis in priore instituto habebat, suspenduntur; ab incepta tamen probatione, ipse ad observantiam iuris proprii novi instituti tenetur.

§2. Per professionem in novo instituto sodalis eidem incorporatur, cessantibus votis, iuribus et obligationibus praecedentibus.