Who can help me with CSWP Segment 2 sample question

I have a sample model in CSWP Segment 2. And I need to remove 1 extruded boss from the model. But I couldn't do that.

So the issue is:
-I must remove the E4 from the model (just suppress it)
-I must redo everything with mistake after rebuilding

How to do?

Thanks

3 Answers

You've created E4 too early.
Then you related E5 and E6 to E4 through dimensions and relationships. If you want to be able to suppress E4 alone, no other features can be based upon it. That's how feature/history based modeling programs work. That's what the exam is testing.

Best way to do that, without destroying the relations, is "Delete faces". After that can you make sketch editing easily.
You can check the pictures.