Hello,
I would like to know a solution to the problem stated in the subject. Maybe there is some way to smoothe it out if there is no solution to this. Maybe dwg file is bad im not sure.
Here's another approach, which I believe will work fine in situations like this:Simply select all objects you want to join with the Pick tool (or subcurves with the Shape tool), then go to the Join Curves docker, select Extend (actually, I don't think it matters which mode you use in this case) and hit Apply.Done.Reduce nodes as Shelby suggested, if needed.