HI Jonathan, in your example the original example data isn't two arrays, but a single array with two values that you want merged into a single value. The first step would be to use a Router to create two arrays of records and the Join snap to add the fields from the second object to the first object. The whole flow would be:
Input-> Router ->Output A {field_1...field3} ->Join {field1...test}
->Output B {test}
hi, I would use a Gate snap to gather these two documents together, then do an object merge inside a Mapper snap, with Javascript expression to merge objects.