********* Enclosures - Redesign?

Can anyone confirm to me if the ********* box has had a redesign at some point?

I'm trying to confirm if I will need to remove the child seat anchor (or accommodate it otherwise) prior to putting the box in. The video on their site shows a box with an extra notch in the back, but it is being installed in a 2016 (mine is 2013).

I don't have that notch on the used one I just picked up, so I'm pretty sure I've already answered my own question, but wanted to confirm.

If I just have an older design, I'll look at adding my own notch with a junction box or something. I'm not interested in removing the anchor.