RAM Connection Y (bearing length calculation for Flush MEP)

Hello All , I have some questions regarding the bearing length equation for flushed MEP In ram connection. There is differences btw different versions and would appreciate if someone can clarify the following points: 


According to design guide 16 , Table 3_3 . The bearing Length ( Y )equation as indicated in image 1. 
 

V11 Report:
- 1) what I noticed here is that in v11 report, It considered the vertical edge distance (pf according to DG 16 ) (Lev according to RAM Concept report ) equal to S value. Even though, the Vertical edge distance is less than S value,  and it should have  been taken as 34.93 mm instead of 75.93 mm in the equation below.
 Image 2 & 3 . 
So in this version where this was a mistake by the software ? 

2) in the equation it is taking bcf ( width of column flange instead of width of plate) why is that   ? 

v12 or 13 report :: 

I could not understand here why it is using 2Lev instead of Lev in the equation ,  h1*(1/(2*Lev)) should be h1*(1/Lev). Would really appreciate if you can help me with this one here. and why it is taking bcf ( width of column flange instead of width of plate here as well )  
Image 4&5 

image1



image 2                                                                                           image 3 



image 4                                                                                        image 5 

regards,