I mostly need content loaded from a HTML-bric and since images don’t get exported when used this way i usually place my extra-content in a special folder in the root of the site.
The problem is that it gets deleted at each export i have to drag a copy of it back in again to have things working right.
This is probably not an issue for everyone or maybe you’ve already solved this.
But for me it’s been quite annoying for a long time and it wasn’t until i actually thought how to solve it that i realised that it was embarrassingly simple and i had to share it.
Place your special folder the exported folder root.
Right-click that folder and “Get Info”
Check the “Locked” box.
Now that folder and content won’t get deleted on each export