If this isn't already fixed in v23, when in the task explorer, if you apply a column filter in your layout, then click 'Refresh' to update the task statuses, the column filter clears. It should not do this unlesss you select 'Reset' We have a custom field to indicate which team the task is for, field team or design team, and we filter the column to hide tasks. So clicking refresh to see how tasks are progressing and having to re-filter is not ideal.