We're doing a longitudinal study that requires several follow-ups with the same survey and same participants. We were wondering what would be the best way to organize this so that we can make sure that we have the same participants (is there a way to save a participant table from one survey to use for another survey?) and so that we know which wave it is (e.g. 1st survey, 1st follow-up, 2nd follow-up, etc.).
Also, is it better to do it all on one survey or to copy the survey and have a separate survey for each wave?