thats because the replay file only registers frames in which you edit joints (if you didnt edit anything on frame 7 then thats probably why there isnt anything saying FRAME 7 in notepad)

the solution i can think of is to record the replay using nuthug's recording script so every frame appears and you can add the emote on any frame, but if you post the replay here and the emote you want i could try to do it later since its a bit of a hassle to do it if you havent used the script before