Yes, Schedule K-1's are not included in the brokerage 1099-Div forms so you will need to enter the K-1's to TurboTax separately.
Since you said you traded the limited partnership interests, the gains and losses are separately reported on the combined brokerage statements. Chance are, they are reported in the short term covered section of the combined brokerage statement. These gains and losses are in addition to the amounts reported on the Schedule K-1's.
