Article 87a 1.

If as a result of the entry into force of Regulation (EU) No 465/2012, a person is subject, in accordance with Title II of this Regulation, to the legislation of a different Member State than that to which he/she was subject before that entry into force, the legislation of the Member State applicable before that date shall continue to apply to him/her for a transitional period lasting for as long as the relevant situation remains unchanged and, in any case, for no longer than 10 years from the date of entry into force of Regulation (EU) No 465/2012. Such a person may request that the transitional period no longer applies to him/her. Such request shall be submitted to the institution designated by the competent authority of the Member State of residence. Requests submitted by 29 September 2012 shall be deemed to take effect on 28 June 2012. Requests submitted after 29 September 2012 shall take effect on the first day of the month following that of their submission.