Idea: Deleting questionnaires

Hi,

to test the display of the questionnaires, I sent out many questionnaires. I know that I can cancel them so that they are no longer sent out, but they still remain in the list, which means that my list is now very confusing. I would therefore be very grateful if I could delete them (presumably including the data).

I know that I can theoretically copy the project and then these sent questionnaires will no longer be there, but that also means that I will have to change the key again that participants use to register for my study...

Thanks and greetings,

Jil