between my debt being 'assigned' and being 'sold' to a CA, if any? Still waiting for my DV, but wonder if it ends up being assigned and not sold if I can breathe a little easier and stop waiting for a summons to appear.
Assigned means the original creditor still owns the debt and has "hired" someone (a collector or lawyer) to collect on their behalf. In this case, you can sometimes deal with the original creditor and have them pull it back from the collector. The original creditor would make the decision whether or not to sue, and whether to settle for less. If it's been sold, the original creditor has done just that--sold the debt and all rights to collect to a third party. The original creditor no longer has any control over the debt and you cannot deal with them. The collector who bought it can collect, and it's up to the collector to decide whether or not to sue and how much they'll settle for.
And depending on the creditor, the OC might be more likely to sue. They'll be more likely to have all the documentation as well.