Navigation from inside modal, then retain tabs and side menu, ionic v3

Able to get a working solution after viewing the NavController documentation for navigating from an overlay component:

Navigating from an Overlay Component
What if you wanted to navigate from an overlay component (popover, modal, alert, etc)? In this example, we’ve displayed a popover in our app. From the popover, we’ll get a reference of the root NavController in our app, using the getRootNav() method.

Maybe the ionic team needs to update their documentation, though, because getRootNav is deprecated.
Therefore, I went with the option for getting the root nav here: