In the Haggada in the part of Dayenu it ends off with
אִלּוּ הִכְנִיסָנוּ לְאֶרֶץ יִשְׂרָאֵל וְלֹא בָנָה לָנוּ אֶת־בֵּית הַבְּחִירָה דַּיֵּנוּ.
If He had brought us into the land of Israel and had not built us the 'Chosen House' [the Temple; it would have been] enough for us.
and in the summary it ends off with
וּבָנָה לָנוּ אֶת־בֵּית הַבְּחִירָה לְכַפֵּר עַל־כָּל־עֲוֹנוֹתֵינוּ.
and built us the 'Chosen House' [the Temple] to atone upon all of our sins.
Why does it add in the part with the Karbonos in the summary and it doesnt mention it in the main part?