Is it wrong to ask players to replay a session? /u/ValT3K DnD: Roll for Initiative!

I’m the DM of my homebrew campaign, we have been playing this campaign for a couple years now, and all the players are having a lot of fun. Last session it was the ending of a big fight to end an important chapter in the campaign. It was the eleventh turn of combat the BBEG had 3 hp, and was about to heal in his turn, he had just used shield and had 25 AC, I was pretty ok, then my ranger returns from banishment, shoots two (2) arrows, one miss and the other hits with 27 to hit for 22 damage. Now I was sad because his death was very anticlimactic, he had more things to do and I had planned some more rounds of combat but he died. I shrugged it of and kept going with the rest of the session that I had to improvise a little because I hadn’t planned it to end so early but it kept bugging me for the rest of the week. We are about to have another session this evening. Do you think it is wrong if I ask my players to replay the last two rounds of combat and last session?

I’m the DM of my homebrew campaign, we have been playing this campaign for a couple years now, and all the players are having a lot of fun. Last session it was the ending of a big fight to end an important chapter in the campaign. It was the eleventh turn of combat the BBEG had 3 hp, and was about to heal in his turn, he had just used shield and had 25 AC, I was pretty ok, then my ranger returns from banishment, shoots two (2) arrows, one miss and the other hits with 27 to hit for 22 damage. Now I was sad because his death was very anticlimactic, he had more things to do and I had planned some more rounds of combat but he died. I shrugged it of and kept going with the rest of the session that I had to improvise a little because I hadn’t planned it to end so early but it kept bugging me for the rest of the week. We are about to have another session this evening. Do you think it is wrong if I ask my players to replay the last two rounds of combat and last session?