In the formula currently listed,
Anatomy Damage Bonus = (skill/2+5)
This is what it used to read on Stratics:
The Damage Bonus % = anatomy / 6 (+ 5% if anatomy at 100.0 or higher)
The +5 in the currently shown in the damage bonus formula comes from the 5% bonus at GM Anatomy, and I can't find any reference that it was ever changed. I *believe* that the bonus still applies, otherwise from this formula you are getting a 5% bonus from Anatomy even at zero skill.
Furthermore, if you look at the damage bonus for Tactics, you have:
Tactics Damage Bonus% = Tactics ÷ 1.6 (Add 6.25% if Tactics >= 100)
which clearly shows the bonus for GM+ Tactics skill.
Connor and I had a long debate over this, and that is when we found the two different formulas on Stratics. At that time there was no formula posted on UOHerald, but there was a reference to the 5% bonus to GM Anatomy. Petra changed this formula and calculation, but now it is changed once again.
So, I am saying that there isn't a reference to a change and believe that the +5 in the Anatomy damage bonus only kicks in with GM+ skill.
p.s.
UOGuide has references to both formulas still on its site