Topic on Talk:Structured Discussions

If I installed the old version of Flow(beta), and in future, the database table of Flow changed, should I have to delete the old database table? I am afraid that Flow won't update old tables automatically or will empty old tables.

Flow uses the standard update.php mechanism from within mediawiki, as such the data will migrate forward as expected. Flow also stores, by default, all content utilized in the last 3 days within its cache. At the WMF level db patches are their cache interaction are handled on an individual basis, from the outside it is probably easier to just update $wgFlowCacheVersion to invalidate the old cache after running update.php.