It's like you want .

Sometimes i use 3 survey too : one closed (by time), and others one with different question in each, some are same. The closed one get all response (but i hack response id to allowing update/not replace).

VV : a .... don't remind why it's named like this .....

Same here, Denis, same here. I don't understand why you don't like creating dummy tokens...

Your approach is relatively quick, I agree. And I understand it better now. I wouldn't say it is necessarily the "quickest" approach.

I normally prefer not to delete any data and rather create a few extra dummy tokens, then exporting a file, deleting the responses from the survey, open it, do the data entry and then import the old data. I would personally prefer to go via some dummy tokens that are also created very quickly. I think there is even a function in LS now, isn't it? And if not, you create a quick CSV file, upload it, done.

I guess it is just some kind of personal preference and "workflow" thing.

I normally prefer not to delete any data : +1 here

In fact : i think dummy token are OK, but need a lot of manual update : and all manual update are unsure.

>> VV : a .... don't remind why it's named like this .....

Mr Google seems to think it's purely a Limesurvey thing (all pages with 'vv survey' refer to Limesurvey). Must be lost in the mists of time...

Generating dummy tokens was my first approach, but that would require dummy addresses, names, etc

Nothing that a quick formula in Excel can't solve. Or a function in LS:
manual.limesurvey.org/Survey_participants#Dummy_Tokens

You don't need names/adress/email or anything else in token. You need the columpn but can be empty

Denis, there is even a function to create dummy tokens in LS. So not sure about the manual part.