I just went through this.
I found that Komperdell has specific clear instructions on their website. However, on the list of videos that they have for doing things with the poles, they have mixed up the ones for tip changing and basket changing.e
Here is the one for basket changing. It works, and it is simple.
You heat the basket. This makes it soft and it is then easy to bend it enough to get it loose and clear the retaining pins, and turn it to unlock it.
You can use either a heat gun or hot water.
I did the hot water and it came off easily without burning my hands.
My baskets were marked C3, if that means anything.
Nobody that sells these links to the actual directions, they just tell you to twist and it comes off easily. We need a prize for instructions by those that have never used the instructions they post.