My company is using SW2015 and we are in the process of hiring a consultant to do drafting in SW2013. In order for him to create drawings of our models, we would have to give him STEP files to do the detailing. He then would provide us with solidworks drawing files. The associativity will not exist with my 2015 models. Is there a way to attach drawing files created in 2013 with model parts created in 2015?