Hi and thanks for this good plugin first!
I also have this problem not solved yet, like to have a good answer by return if possible~ Thanks again!
The pictures are linked as below ;
picture 1: adding 2 text fields into the poll.
https://postfiles15.naver.net/20141123_190/cony09_1416753937730T9ebm_JPEG/test_poll1.jpg?type=w3
picture 2: do a trial and answer with 2 text fields into the poll.
https://postfiles3.naver.net/20141123_290/cony09_1416753937587tHPSo_JPEG/test_poll2.jpg?type=w3
picture 3: downloaded(export) the data but the text fields are not found.
https://postfiles15.naver.net/20141123_174/cony09_1416753937332XWeHq_JPEG/test_poll3.jpg?type=w3