A model of the nucleocytoplasmic transport activity at the MMD. Picture representing the anaphase B nucleus of an S. pombe cell with several nuclear pore complexes localized at the MMD. Association of NLS cargoes to Imp1 allows this importin-α adaptor, in complexes with specific impotin β subunits, the transport of disassembly factors such as Cdc48 through the nuclear pore. Disassembly factors are then unloaded at the midzone nucleoplasmic compartment to promote spindle midzone dissolution.