But "token based persistance" on does exactly what you NOT want. The answers persist. If you put it on "OFF", they will start a new survey with the token.

Thanks Holch for taking the time on this

I would actually need both : that the user is taken back to the previous response so he can edit it (instead of generating a new one that he'd need to fill in from scratch) but that he starts off the 1rst page everytime.

Don't know if the combination of both is possible - ?

OK, now I get it. I don't know if this is possible. It is a very unique requirement, I'd say.

You might be able to change the lastpage in the database, but I am not sure how you would trigger this. No idea.

Ok, I guess it's not that hard to tweak, but it's neither essential for now, so I'll just park it. Thanks for taking the time on this Holch!

Just for info if anyone is still wondering what the "-1" lastpage is it's because the participant did "previous" on the welcome page.
We have "terms and conditions" that need to be accepted before the welcome page and if a participant accepts these conditions then he gets to page "0" (welcome page). If he uses "previous" on his browser after getting to page "0" he goes back to lastpage = -1.