Conditional logic not hiding check boxes

I have a drop down with question "what campus will you attend" and answers "Campus 1, campus 2"

That works.

Conditional logic 1: 

When campus one is selected hide all questions about campus 2, and show all questions about campus 1.

Conditional logic 2: 

When campus one is selected hide all questions about campus 1, and show all questions about campus 2.

Which works on first go-around, but if I backup and change my answer, the check box questions and anything conditional on those questions, does not hide.

Why and how do I fix it?

FIGURED IT OUT:

In form settings under SHOW MORE OPTIONS

there is an option for "Clear hidden fields on" and the choices are "submit" and "hide"

If you move it to "Hide" (submit is the default) the behavior goes to what one would expect.