Collection Links Don't Respect target _parent?

Hi forum!

So I am embedding a WF page on an outside site, thus I need all links to have the link attribute of _parent.

I’ve added the custom attribute in the settings. This attribute shows correctly on the live site when I inspect element. However, when the link is clicked on the parent site, it does not respect the target _parent attribute when the link source is a collection page. It works fine when I use direct linking.

Does anyone know a fix for this?

I’m not a coder so all help is appreciated!