I think almost any BP might have symptoms of BPD. I have both dxds. I know I have traits of BPD. They have said so since I was 17 before my BP dx. It used to bother me but now I just work on treating my symptoms. I go to personal counseling, take mood stabilizers and I go to a DBT group which is the #1 treatment for BPD, but I think its good for everyone lol

Either way, I hope you find the answers you seek. <3