I am trying to create a Preset using one of the existing (Country, Nectar Country) setups. I change the EQ and then click Presets and name the new preset and save.  I have also tried to set it into "A" in History but it does the same thing when selected, reverts back to the original EQ.  If I select the modified Preset and eventually get the modified EQ and then "X" Nectar Elements to collapse it into the Effects area on a track when I open Nectar Elements it has reverted back to the factory EQ and not the new EQ I have in the Preset.   I have contacted Izotope but the support person I dealt with says they cannot recreate the problem. 
 
On a similar note, I have Ozone 5 and 6.  On either I can modify one of the factory presets, "X" out of that and collapse Ozone to the effects area on a track and then reopen Ozone the modification is still there.