I have a sub assembly of chain lifting links that will need to be used in top level assemblies. The # of links are calculated by an "up-to" reference. When running this reference point up and down, there are links that end up missing. So now I get wrong counts in my BoM for number of links. I am running SW 2017 SP5.0. Even if I upgrade to SW 2019, The new belt/chain feature will not work for this assembly. Any suggestions on either a more efficient way of modeling, or different assembly techniques I could use? Also, I cannot seem to use SmartMates with these links.