Before starting a new data collection based on stable data of another data collection, you need to
finalize the data collection which serves as the starting point of your new data collecion cf.
Finalize the data collection.
To start the new data collection
select the new version in the Data collection section. In this case v3.
Click the
button "Go to the participation page":
Click on
‘Participate’:
The
Start date in the Participation status will be updated and access to the new version is completed and the user can return to the Data Collection section:

Once the previous data collection is finalized and the new one has been started, you can
download data from the first version and add those to the next version.
Go to the
Registratrations tab:

Download the data by using the
Download button
"CSV Download All (Stable Data)":

When everything is downloaded, you can start
uploading by Using the upload center.