I don't know what you have done to the Modify Patch - Trim function in ICEM Surf 2025 (using 2025.2) but I am getting many complaints from users about how poor it is compared to 2021.2.

I know you have tried to make the function more consistent with Create-Patch Face but it is so temperamental and fussy now. Often now it won't trim to a Plane. In 2021.2 if a trim curve or Plane didn't quite connect two opposite sides to create the four-sided output, with Extrapolate on it would just do it, no errors. In 2025.2 now, it refuses to do it until maybe Tangent extrapolation is turned on.

If you have these two options Tangent and Curvature Extrapolate, what is Extrapolate doing above this? If I turn this on, the patch now seems to disappear into outer space! 🙂 

Could you add back Modify Patch - Trim V1 so we can use the older version again please.