To help you understand my issue in a better way, I am putting some screenshots..
Added another FBI in related view tab which brings the fields from sub node of the BOPF BO
Another FBI view in related view tab which brings fields from Sub node of Sub node..
On UI screen, Fields which are coming from Related tab views are disabled for input. I doubt that it could be because of Bootstrap config but I am not sure how to make that in my scenario..
