fix sync method (items are not destroy)
fix sync method (items are not destroy)

smelukov/basisjs,smelukov/basisjs,smelukov/basisjs,fateevv/basisjs,tyanas/basisjs,basisjs/basisjs,tyanas/basisjs,istrel/basisjs,istrel/basisjs,tyanas/basisjs,fateevv/basisjs,fateevv/basisjs,basisjs/basisjs,istrel/basisjs,basisjs/basisjs