The GR-75 medium transport named Moonrise belonged to an Alderaanian refugee convoy. This convoy was formed in the wake of the destruction of Alderaan. Commodore Rae Sloane's fleet of the Empire received orders to eliminate the aforementioned convoy. However, their attempt to do so failed during an interception at the battle at Fostar Haven. The convoy managed to escape because Helix Squadron Captain Lindon Javes defected, aiding the refugees with the help of the Rebel Alliance's Echo Squadron and a fleet of Alliance warships.