How to remove a Certificate widget and slides?

[ursuflorin]

I need to remove a certificate widget. The new LMS we use has certificate build in. How do I do this correctly? 

If I just delete the name entry slide and the certificate slide, when I republish the course, the course freezes and loses the bookmarking.

Do I have to remove the variables too?

Any advice is appreciated. Thank you.

[Lilybiri]

Why not just hide those slides, and republish?

[ursuflorin]

Thank you for your promt answer.
I tried to hide the certificate slide but it says there are 83 dependencies on the slide. I attached a screenshot.

[Lilybiri · Accepted solution]

You'll have to use the Usage button on the variables dialog to start with: see where the variables on the certificate are used. You have to break all usage. Then you'll be able to delete the variables, which will probably also cripple advanced actions.

[ursuflorin]

Thank you! I checked with the variables usage button, deleted all rogue variables and republished. The course stoped freezing and the bookmarking works.