Swept Cut not working properly

I am trying to get the bottom of this part to be curved such that it can fit smoothly against the inner wall of a pipe with a diameter of 200 mm. I attempted to use a swept cut with an arc that matched the curvature of the pie for the path. For the profile I used a rectangle that was large enough to cut through the length of my part. However, it only cuts through half of my part though and I have no idea why. Can anyone explain why it is only following half of the path? Or if there is a much simpler way to accomplish this? Thanks in advance!

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