What exactly do you try to reset, your Attributes (Cunning, Physique, Spirit) ?
The ones you see in the middle are not the ones from the start for each class. Each char starts with 50/50/50. You gain 8 for each attribute point spent.
What you are not seeing (because it is not stored like that in the savefile) is the additional points you get from the mastery investment and gear. So what you see in the middle is lower than what you see in game, but it is your actual attribute investment rather than any bonus points from other stuff.
If I had nothing invested all three attributes would have a value of 50.
As Physique and Cunning are 210 each, I raised each by 160 points, which is 20 attribute points each.
The easiest way to reset them back to what they were at level 0 is pressing the ā-ā buttons until you no longer can, at which point they should be at 50. If you use the button, the Attribute Points (top right) increase accordingly, and the dependent stats (Health for Physique and Energy for Spirit) are properly adjusted as well.
If you later distribute them again with the ā+ā buttons, the other fields also get automatically adjusted.
Alternatively, you could enter a number and ignore the buttons, in this case it is up to you to figure out what each value should be however. Changing e.g. Physique will not adjust either Health or the Attribute Points you have available.