I just did essentially this in a new game, and had no problem. If you edited a quicksave, are you sure you reloaded the right one?

I made a named save, loaded it in the editor, and in the inventory tab for each character, right clicked on the gold and selected Edit Item, clicked the General button, changed the amount and then clicked on the Apply button. For the attributes, I just highlighted each number and changed it to a 9. Then I clicked on the 'Save all changes' button, switched back to the game, reloaded, and the gold and attribute changes showed up.
I didn't need to go into the Dev or PAK tabs.