Im still wondering why the 1% of the Versailles coming from Herritage Chapter 1 is not included in the attack damage of the Demolition Tactic, but the 10% is (I have only lvl 3 demolition and as such ist base damage is 2000, but my has 2200 as of the added 10% from Versailles).
So the lvl 4 demolition should have the 2330 base damage, with researched Herritage chapter 1 and Versailles it shall be 2587.