Self-hosted portal issues with UI editor in npm start.

Hello,

So I'm self-hosting the dev-portal and have been using the npm publish to generate the source code etc.
I was going to update the style of the portal, I ran npm start as usual, did my changes, and ended up wanting to reset.

So I went with "Reset content" under "Operations".

Now when I run npm start the content never loads and I get 404 in the browser console, where it's trying to reach the content.

So my question is: Is there a way to reset this in another way? Can I somehow reach and edit the content that is saved when pressing save in the UI edit mode (when running npm start)?

I have the source code for my stable version, so could I just pop that in again?

I have found nothing about this in docs, how to reach the content that is saved.