Update PositionLayout determineChildren to only delete changed items
Update PositionLayout determineChildren to only delete changed items

mgalbier/Envision,BalzGuenat/Envision,dimitar-asenov/Envision,dimitar-asenov/Envision,lukedirtwalker/Envision,dimitar-asenov/Envision,lukedirtwalker/Envision,Vaishal-shah/Envision,patrick-luethi/Envision,Vaishal-shah/Envision,Vaishal-shah/Envision,dimitar-asenov/Envision,BalzGuenat/Envision,dimitar-asenov/Envision,BalzGuenat/Envision,patrick-luethi/Envision,Vaishal-shah/Envision,lukedirtwalker/Envision,BalzGuenat/Envision,mgalbier/Envision,Vaishal-shah/Envision,lukedirtwalker/Envision,lukedirtwalker/Envision,dimitar-asenov/Envision,lukedirtwalker/Envision,mgalbier/Envision,Vaishal-shah/Envision,mgalbier/Envision,BalzGuenat/Envision,mgalbier/Envision,patrick-luethi/Envision,BalzGuenat/Envision,mgalbier/Envision,patrick-luethi/Envision