The club merged with B-SAD, in an attempt of the former to retain their position currently in Liga 3, the third tier of Portuguese football, but they weren't granted license and were relegated to distrital championships.

On 30 April 2016, Cova da Piedade were promoted for the first time ever to the professional second-tier (all previous presences in the second-tier were prior to the creation of Segunda Divisão de Honra in 1990) after beating Angrense 2–1, confirming the first place on Campeonato de Portugal, South Zone, with two more matches still to play.

Os Belenenses) announced a merger, taking the league position of B-SAD while retaining the name and facilities and Cova da Piedade.

Cova da Piedade had not played senior football since being expelled from Liga Portugal 2 in 2021, while B-SAD had been renting the Estádio Nacional from the state while using distant facilities for training.

[3] In June, B-SAD was relegated from the second tier after a 2–1 playoff defeat to Länk FC Vilaverdense, meaning that the fused club would begin life in Liga 3.