A word to the “Add or modify extra settings”-node:
I think this node is meant to take the input at “settings array” and add the settings of the input array “New or changed settings”. But if there is a setting with the same name but different value in these arrays, It´s just logical to take the value of the “New or changed settings”-array, isn´t it? Because at the moment, it quite seems to me, that there is the one of the “settings array” taken in this case 
Ofc i may be wrong with it, but taking a look at that is worth it anyway.
And sry for bad english ^^