Hi there!
We are running version 3.23.6 of LimeSurvey and have a token based study where a "test" response which I filled out myself is missing from the results table. We even got an (empty) confirmation mail that a new response has been submitted and in the participant table the token is flagged as having been used, but the response is not there. I attach a few screenshots.






Confirmation email (in German) where all information is missing:

Hallo,
Eine neue Antwort wurde für die Umfrage 'Peerspectives: Pre-course Survey' abgegeben.
Klicken Sie auf den folgenden Link um den Antwortdatensatz anzusehen:
https://______.limequery.org/admin/responses/sa/view/surveyid/______/id
Klicken Sie auf den folgenden Link um den Antwortdatensatz zu bearbeiten:
https://______.limequery.org/admin/dataentry/sa/editdata/subaction/edit/surveyid/______/id
Um die Statistik zu sehen, klicken Sie hier:
https://______.limequery.org/admin/statistics/sa/index/surveyid/______
Die folgenden Antworten wurden vom Teilnehmer gegeben:

Response ID :
Date submitted :
Last page :
Start language :
Seed :
Token :
Date started :
Date last action :

I found two similar threads here, but the proposed solutions (using a different version, waiting until it appears, or participants might have pressed "clean and exit") do not apply.

Any ideas?

Did you (or someone elese) deactivate and reactivate the survey after you did this test interview?

No, it was a new survey, based on a copy of another survey, which underwent some changes and preview testing. It was only activated once and the missing response was actually the first response.

I recommend to open a bugticket where you provide more infos about the system.
It might be a new bug. It is not the first time we see erased responses.
It might be a bug which is not easy to reproduce.

What PHP version is used. If you have PHP 7.4 I recommend to downgrade to 7.3.

Clear all button delete current response.
github.com/LimeSurvey/LimeSurvey/blob/b8...timeHelper.php#L1381