I have encountered a bug where, when a row in a repeat group is deleted, one of the other rows is 'emptied', meaning all the information is gone. After finding an earlier thread about this ( http://fabrikar.com/forums/index.php?threads/bad-handling-of-repeat-groups-when-deleting.44177/ ), I updated Joomla and Fabrik to the latest versions, and then updated from github. I had no luck however, the bug still persists. And while the other thread says it's specific to the tabs template, I encountered it on the normal bootstrap template as well.