Investors & landlords

So here's a follow up question. I received a 1099-B with several transactions, long-term and short-term. All indicate basis reported to the IRS and there are no adjustments. It is my understanding that I can enter the total proceeds and cost on Schedule D, and not use Form 8949. Also, I am not required to send in any statements of the details with form 8453 or by PDF. 

However, I received a 1099-B from another broker with 2 transactions - one short-term and one long-term. The long-term transaction shows basis NOT reported to the IRS. It is my understanding that this transaction is required to be entered in Form 8949. The short-term transaction shows basis reported to the IRS.

Since I have to enter the long-term transaction on Form 8949, does that now preclude me from entering the totals from the first 1099-B directly on Schedule D? Will I now have to enter ALL the transactions (from both forms 1099-B) on Form 8949? If not, must I include the short-term transaction from the second 1099-B in the aggregate totals on Schedule D or can I show that separately on Form 8949?