How to change anonymous survey from optional to mandatory?

[guidoklinger]

Hi experts,

we created a survey with the characters anonymous and optional.

This survey had been assigned to users who took part in the scheduled course.

Some of the users have started the survey, other not.

Now we decided to change the characters of this survey from optional to mandatory and made the changes direct at the survey.

But users who had assigned the survey before we made the changes have still the survey as optional assigned.

If we go to the item and mark there the survey as mandatory we get the warning, that all optional assigned surveys will be deleted.

Once you have cleared the optional assigned surveys you cannot assigne the survey which is now mandatory again to the same users.

Is there a possibility to reassign the survey (wich is now mandatory) to the users?

Regards

Guido