'Cases' are missing in Advanced Search (usually the last search item). The last 2 items I have are 'Mailings' then lastly 'Events'. I can't see any configuration option that sets this, so am puzzled how to fix. This Civi was installed in 2013, don't know whether that's a factor. It's at 5.19.4 and Drupal. Can anyone help - how can 'Cases' be put back in Advanced Search?