Cumulative mass accretion from the simulation domain with a SN explosion at t = 250 kyr (the dashed red line indicates this moment). Until the CND relaxes and reaches the MHD-equilibrium (at ~200 kyr), nearly 1700 M_⊙ of gas leaves the simulation domain. At the moment of the explosion, the accretion onto the central sink and the escaping mass (in the form of a mass-loaded wind) reach an approximately constant phase. The SN explosion causes an increased rate for both mass flows.