Is the fourth transitional provision of the Spanish Constitution in force?

In the latest years, frequent discussions have been held about the eventual repeal of the fourth transitional provision of the Spanish Constitution, which envisages a specific legal channel for the integration of Navarra into the Autonomous Community of the Basque Country. Both those who support this repeal and those who advocate for the maintenance of that provision in the Constitutional Text start from the premise that such provision is still in force in our legal system. This paper attempts to justify why this normative mandate, as has happened with the rest of the nine transitional provisions of the Spanish Constitution, has lost all validity because the precondition of transience has ceased.