Sounds like you are doing a great job with managing your symptoms! Yea to you!

I've done a fair bit of reading on this (I've got BP, but BF's BPD and his behavior confused the hell out of me till I learned this and reading had helped me to understand) and the primary difference in treatment IS the medication issue. With BP, the primary treatment is medication. With BPD the primary treatment is therapy.
Therapy is also a very good thing for BP, but it is secondary to medication.
Therapy (especially DBT) can be very effective for BPD. Though medication is sometimes used for BPD, in most cases, it usually isn't very effective. So, though both treatment modes can be used in either, it's a matter of "what works best" that is the difference. Some people have both conditions.
As far as talking with your team, have you previously shared your thoughts on potential misdiagnosis with them? If not, then that is the place to start, so that you can work together to sort it out. It might well be that regardless of dx (BP, BPD or both), you all decide to leave your regimen as is simply because it is working so well. If they agree that it could be a mis-dx (to BDP only), it
might be that a medication reduction/elimination would be tried(?) Regardless of anything like that, one thing you might want to ask about is trying DBT. CBT is good, but DBT might be a more tailored fit for you.
I don't think there are an
imperative treatment plan differences for you to inquire about (it's working so well, after all) -- just tossing a couple of thoughts out there. Good luck!