Fix to transfer module to avoid writing every block twice during copy :O
Fix to transfer module to avoid writing every block twice during copy :O

jonboiser/kolibri,lyw07/kolibri,christianmemije/kolibri,jayoshih/kolibri,benjaoming/kolibri,DXCanas/kolibri,rtibbles/kolibri,DXCanas/kolibri,mrpau/kolibri,jayoshih/kolibri,aronasorman/kolibri,learningequality/kolibri,aronasorman/kolibri,mrpau/kolibri,mrpau/kolibri,jonboiser/kolibri,benjaoming/kolibri,jtamiace/kolibri,indirectlylit/kolibri,jtamiace/kolibri,rtibbles/kolibri,jamalex/kolibri,MingDai/kolibri,mrpau/kolibri,jtamiace/kolibri,jamalex/kolibri,aronasorman/kolibri,learningequality/kolibri,jtamiace/kolibri,lyw07/kolibri,indirectlylit/kolibri,rtibbles/kolibri,christianmemije/kolibri,learningequality/kolibri,DXCanas/kolibri,benjaoming/kolibri,christianmemije/kolibri,learningequality/kolibri,jamalex/kolibri,jonboiser/kolibri,aronasorman/kolibri,jayoshih/kolibri,lyw07/kolibri,jonboiser/kolibri,indirectlylit/kolibri,rtibbles/kolibri,jayoshih/kolibri,christianmemije/kolibri,MingDai/kolibri,DXCanas/kolibri,MingDai/kolibri,lyw07/kolibri,jamalex/kolibri,MingDai/kolibri,indirectlylit/kolibri,benjaoming/kolibri