Page break NEXT button: Can I use the NEXT button as a SUBMIT button and then got to Thank You page?

See screenshot:

At the bottom you can see the normal back and next buttons (in Dutch that is: 'terug' & 'volgende'). 

What I want is that if a user uses the next button:

1. The form is submitted (like with the normal submit button)

2. De user goes to a new page with a new form (I normally use the "thank you page option" for this

Ofcourse I could use the normal submit button, but then the back button is lost.

If I understood you correctly, you want to have the back and submit button shown in the same line - submit instead of the next button.

If that is so, you can set the language of submit button to state next / Volgende and we can help you align the submit button to be placed where Next button would be.

Then I believe that you will be redirecting them using one of the following options:

Redirecting Users to a Different Page

Configuring Change Thank You URL after submission condition

I think this one does the trick:

Configuring Change Thank You URL after submission condition

thanks

Good, could you let us know what is the form? So we can help you align the submit button to be placed where Next button would be.