Fixed
- Traffic history: upgrading from 1.96 or earlier no longer deletes traffic history on large installs: more than about 2,000 recorded interfaces at the default 7-day retention, or about 460 at 30 days. The old history is kept and converted in the background while mikr runs, and a banner on the dashboard shows the progress. Once it is done, a superadmin can delete the old copy from the same banner to free the disk space; until then nothing is removed. History already cleared by 1.97.0 or 1.97.1 cannot be restored. As with any upgrade, back up the
datafolder first.