Question about working of cursorable feature of indexes in data model.

Hii everyone, I have created a data model and in that model I have one parent view and then a nested view. So I made cursorable true for parent and cursorable true for nested view in the indexes field(@container) so only limited rows of nested columns are coming into dataset( used a plugin to fetch dataset from cdf using dataiku) but if I do cursorable false for the nested view then all the rows are coming for it. Just for FYI in our code of plugin we have set limit of 1000 rows so when cursorable false then all the rows are coming and when cursorable true for nested view then only 1000 rows are coming. 
And when parent view’s cursorable is false it says it does not exist.
Is this correct behaviour of the cursorable feature? if yes can you please explain why?