Hi everyone. I get this error when I use "feature modeling" on a blended surface and try to move an edge or vertex.

Also idk why its selecting the whole surface instead of the blended surface only like in the video.

I would appreciate any help on this. Thanks

Link to file: https://wormhole.app/bbPyvE#OHFdkQEzWY-Sq9K0BZZr-g

For me feature modeling is selecting the whole surface instead of the blended surface only

feature modeling in course video