Strength II Live Load Moment

I have a question about not being able to replicate the live load moment under strength II. 

I have the strength II option in the analysis factor toggled, so AASHTO Eq. 4.6.2.2.5-1 (from 9th ed, which in the manual is referred to as 4.6.2.2.4) should have been applied. 

From My understanding the moment value reported under envelope for LL+I M+ should have moment distribution factor and impact factor included.

To replicate this value, I took the moment value for design truck, design lane, and permit truck from load case at this location, and did 
(Permit truck*impact factor + design lane)*g1/1.2)+(Design truck*impact factor + design lane)*(gm-g1/1.2)*live load factor 1.35

It turns out my calculated value is about 20% higher than the reported value in analysis tab. Am I missing something?

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