By default, DNN stores the last five
edits to a HTML module. To increase this, log into your site as a superuser,
go to Host
and run the following query, replacing 'XX
' with the number of edits you wish to store:
SET SettingValue = XX
WHERE SettingName = 'MaximumVersionHistory'
After running the SQL query, go to Tools > Recycle Application Domain to make the changes take effect.