Combat Calculations - what do I miss here?

[BigDuke66]

Another odd calculation I found, this time in a melee test in the Getting Started Scenario of the Austerlitz game.
Melee odds shown before the combat.

Situation is that no fire was exchanged so the modifiers eligible should be:
- Non-British infantry attacking in column +25% Attacking Strength
- If no attacking units have fired this turn or previous phase +20% Attacking Strength
- If the unit of lowest Quality on the attacking side has Quality of A or more 20% Bonus
- If there are defending units that have not fired this turn, but are able to fire on the attacking units -20% Attacking Strength

So when you look at the values the Russian column has +25% that is likely for being in column when doing a melee and we have a 40 modifier for I think the Russian side.

First I wonder why only the column modifier seems to have been directly added while the others seem to run under modifier, second the 40 modifier doesn't make sense at all, we have:
+20% Attacking Strength
20% Bonus
-20% Attacking Strength
The +20% and -20% kill themselves and leave the 20% Bonus, how does that bring a modifier of 40 up???

Hopefully someone can make sense of them or tell me what I miss.