Flow: Iso direction swapped after opening a radius up

[FrodoLoggins]

Toolpath used to look like this; all horizontal passes:

Then after using the push/pull tool in the design workspace on this radius:

To make it ~12 thou larger like so:

My toolpath iso direction flipped:

Definitely weird because the U/V curves did not change at all. Below is the edited model [on the left] vs an unedited model. Curves did not change direction:

As you can see the U/V curves did not change but my toolpath did.

This toolpath:

[FrodoLoggins]

So in summary: The U/V curves stayed exactly the same (as evident from the second to last image) but Fusion decided to pretend they changed.

I'm hoping in a week when I'm ready to post this program Fusion doesn't decide to stop pretending the U/V curves changed.