Shujaa greatest try maker Collins Injera and Dan Sikuta have returned into the national team ahead of Stellenbosch, South Africa next month.
Mwamba and Kabras Sugar, who missed Madrid and Doha Invitational tournaments respectively have resumed training ahead of the tournament as well as Olympics Games in Tokyo, Japan.
They duo are joined by Herman Humwa, Dennis Ombachi, Alvin Marube and Levi Amunga.
The Innocent Simiyu led side is in a two weeks training before heading to South Africa on May 6 and will be facing off with Zimbabwe, Uganda, and hosts South Africa.
William Ambaka, Vincent Onyala, Herman Humwa, Alvin Otieno, Dennis Ombachi, Harold Anduvate, Andrew Amonde, Bush Mwale, Daniel Sikuta, Jeffrey Oluoch, Collins Injera, Daniel Taabu, Johnstone Olindi, Tony Omondi, Billy Odhiambo, Alvin Marube, Nelson Oyoo, Mark Kwemoi, Levi Amunga, Derrick Keyoga, Jacob Ojee.