Bookmark Navigator - no pre-selection

Hello everyone, 

I am working on a dashboard with two different sections. The sections are independent from one another. To make the dashboard user-friendly, I created a landing page using a bookmark navigator to access the individual sections of the dashboard.

 On the section pages I use a page navigator. The pages of the respective other section are not shown in this navigator.

If I use this navigator to get back to the landing page, the previously selected section (Section B) is still selected and marked.

How do I ensure, that when reaching the landing page no section is selected as shown in the first picture?

I hope that I could clarify what my problem is. 

Thank you so much in advance!