How to remove control point in SubD

Rhino SubD
1

Hello Peoples,

I created this SubD model and failed to remove a control point on a crease.

This model is converted from a polysurface, and I was trying to merge the two creases into one.

image
image821×688 40.2 KB

(The chosen point is the control point)

image
image1053×711 74.8 KB

(When I dragged the control point, the triangular face transform into other shape)

Can someone give me a advise?

Thanks for helping.

Here is the file:
SubD_Issue.3dm (65.4 KB)

2

111

3

Hi, thanks for replying
Somehow my control point can not be deleted.
Could you please tell me how to do it?
I’ll be very appreciated for your help.

SubD_Issue-2

4

select the control point , press the Delete button on your keyboard