For the migration from C.SIS to Central SIS II, France shall make available the SIS 1+ database and the Commission shall introduce the SIS 1+ database into Central SIS II. Data of SIS 1+ database referred to in Article 113(2) of the Schengen Convention shall not be introduced into Central SIS II.

The Member States participating in SIS 1+ shall migrate from N.SIS to N.SIS II using the interim migration architecture, with the support of France and of the Commission.

The migration of the national system from SIS 1+ to SIS II shall start with the data loading of N.SIS II, when that N.SIS II is to contain a data file, the national copy, containing a complete or partial copy of the SIS II database.

The data loading as described in the first subparagraph shall be followed by a switchover from N.SIS to N.SIS II for each Member State. The switchover shall start on the date to be fixed by the Council, acting in accordance with Article 71(2) of Decision 2007/533/JHA, after the conditions of Article 71(3) of that Decision are met. The switchover from N.SIS to N.SIS II for all Member States shall be completed within no more than 12 hours. The national applications for the exchange of supplementary information shall migrate to s-TESTA network in parallel with the switchover.

The migration shall be terminated following an intensive monitoring period. That intensive monitoring period shall be limited in time, and shall not exceed 30 days from the date of the switchover of the first Member State.

The migration shall follow a detailed schedule provided by the Commission and the Member States participating in SIS 1+ acting within the Council.

The Commission shall assist in coordination and support of the common activities during the migration.