With the help of the custom fields type SQL we make a database query. Among other things, this also filters for the following criteria #__jem_events.dates >= CURDATE().
Here the selection is for dates that are not in the past. This value is saved correctly and also displayed on the invoice.
The error is that this value is automatically deleted as soon as the date is in the past, although the value is not changed or saved. Normally, these selection (option) values are saved until the next time they are edited by the user.
