TableTools not exporting all rows with bServerSide false when via ajax

I am using the following code to create a datatable. I am pulling data via ajax, but only at the start, so all filtering and sorting etc, is on the client side. If I populate the rows in the table directly I can get all of my filtered results, but if I use the ajax call (which allows me to take advantage of the "Processing..." message) it exports only the current page of data.

        var oTable = $('#dataTableAccountList').dataTable({
            "sDom": "<'row'<'col-lg-6'l><'col-lg-6'Tf>r>t<'row'<'col-lg-6'i><'col-lg-6'p>>",
            "bServerSide": false,
            "bDeferRender": true,
            "sAjaxSource": '@Url.Action("AccountLoadThroughAjaxCall", "AccountList")',
            "bProcessing": true,
            "oTableTools": {
                "sSwfPath": "/Scripts/TableTools-2.2.0/swf/copy_csv_xls_pdf.swf",
                "aButtons": [
                {
                    "sExtends": "copy",
                    "oSelectorOpts": { filter: 'applied', order: 'current' }
                },
                {
                    "sExtends": "xls",
                    "oSelectorOpts": { filter: 'applied', order: 'current' },
                    "sFileName": "AccountList_yyyy-MM-dd_hh.mm.ss.xls"
                },
                {
                    "sExtends": "pdf",
                    "oSelectorOpts": { filter: 'applied', order: 'current' },
                    "sFileName": "AccountList_yyyy-MM-dd_hh.mm.ss.pdf",
                    "sPdfOrientation": "landscape",
                    "sPdfMessage": "Account List" + ($('div.dataTables_filter input').length > 0 ? " Filter: " + $('div.dataTables_filter input').val() : "")
                },
                {
                    "sExtends": "print",
                    "oSelectorOpts": { filter: 'applied', order: 'current' },
                }
                ]
            }
        });

Again I am sure I am missing something simple, but can't see what it is.

Thanks in advance!