YOU answer your own question "I know you can't do SR transactions outside of SR" But if you had a webstore then that would be doing business through the webstore.... And if you have a BMR account then you would be doing business through that. As an SR vendor you can not vend through the forums or outside of Escrow. You already see the thin line there is, so use common sense. If someone messages you here or on SR then you can not tell them to contact you at xxxx. And if they message you in the forums trying to do business then you direct them to your SR page. Also there is a vendor support button at the bottom of your page, use that, and ask them what you are asking in here. That is the place to get your answer And...NO...you will not lose your SR account just for having a BMR account.