SMK 89

Hi all - working through completing my Online N-400 which I can submit on June 15. I am filing Marriage-based so, 3-years post GC date. Im stuck on this Travel Outside the U.S. in the last 5 years question... it sounds like the instructions make it seem like the system autopopulates your travel history but then there is a note that you should correct anything incorrect or missing. How do I answer this? TECHNICALLY, 2017 is 5 years ago, at that time I lived in my home country abroad. I crossed with my K1 Visa October 2018 and since then i have never left the U.S. Do i add in my "trips"/aka living in my home country here since it says 5 years? Do i leave it blank because in my 3-year history i have never left? Any advice would be great. I dont want to enter in all these "trips" that werent trips but me living abroad and make it trigger in the system like i was outside of the u.s. for more than 6-months since well, i wasn't allowed to even live in the U.S. 5 years ago!!!!! lol

Question - putting together my package now. Must we get certified copies of tax returns from the IRS? I.e., pay $43 per last 3 years (marriage based naturalization) or are transcripts enough???