There is an incoherent processing of the following data:

Case 1:

test.id,test.values.value,test.values.0.id 1,foo,bar 

which converts to:

[ { "test": { "id": "1", "values": { "0": { "id": "bar" }, "value": "foo" } } } ]

Case 2:

test.id,test.values.0.id,test.values.value 1,bar,foo 

which converts to:

[ { "test": { "id": "1", "values": [ { "id": "bar" } ] } } ]

Those 2 CSV are basically the same, I only inverted column 2 and 3, and it gives different result. It seems because the array is parsed first, test.values.value is simply being ignored