I agree, state info almost always has to be input manually.

For an OK resident, you adjust income on Screen 51.041, not in the K-1 input screen. 

Withholding you can enter in the K-1 input screen under Credits and Withholding.

For a non-resident, you can probably use the State Source column in the K-1 input screen, but all my people are resident, so it's been a long time since I had that situation.