filter data reset history in Batch Editing

[MarwaAbuEssa]

hi,
I'm using pqGrid v2.2 , Batch Editing to update data (data model "local").
when i added filter at header (local) , it clears history of changes (if any).
history: function (evt, ui) {

            var $grid = $(this);
            if (ui.canUndo != null &&  ui.type !="reset" ) {
                $("button.changes", $grid).button("option", { disabled: !ui.canUndo });
            }
            if (ui.canRedo != null &&  ui.type !="reset") {
               $("button:contains('Redo')", $grid).button("option", "disabled", !ui.canRedo);
            }
            if(ui.type !="reset"){
                $("button:contains('Undo')", $grid).button("option", { label: 'Undo (' + ui.num_undo + ')' });
                $("button:contains('Redo')", $grid).button("option", { label: 'Redo (' + ui.num_redo + ')' });
            }

        }

after filtering from head for any column , in history function ui.type ="reset" and canRedo=false !!!

any help is appreciated

Regards,
Marwa