jQuery Grid Plugin - jqGrid

So here's the bullk of my grid:

    colNames:['Catalog', 'UPC', 'Description', 'Sales Qty.', 'Back Order', 'Need', 'Order Qty.', 'Min. Qty.', 'Purchase U/M', 'Ext. Cost'],
       colModel:[
           {name:'catalog_number',index:'catalog_number', width:25, align:"center", sorttype:'int'},
           {name:'barcode',index:'barcode', width:25, align:"center",sorttype:'int'},
           {name:'description',index:'description', width:25, align:"center"},
           {name:'quantity',index:'quantity', width:25, align:"center"},
           {name:'backorder',index:'backorder', width:25, align:"center"},
           {name:'need',index:'need', width:25, align:"center",editable:true, classes: 'activecell' },
           {name:'quantity',index:'quantity', width:25, align:"center"},
           {name:'minimum_purchase_quantity',index:'minimum_purchase_quantity', width:25, align:"center"},
           {name:'stocking_unit_quantity',index:'stocking_unit_quantity', width:25, align:"center"},
           {name:'cost',index:'cost', width:25, align:"center"},
       ],
           rowNum:10,
           rowList:[10,20,30],
           pager: '#pcrud',
           altRows: false,
    viewrecords: true,

    loadonce:true,
    sortorder: "asc",
    autowidth: true,
    shrinkToFit: true,    
    height:"auto",
    scrollOffset: false,
    sortname: 'catalog_number,barcode',
   
       onSelectRow: function(id)
        {
            var gr = jQuery("#bwdetail").jqGrid('getGridParam','selrow');
            if( gr != null ) jQuery("#bwdetail").jqGrid('editGridRow',gr,{height:280,reloadAfterSubmit:false,closeAfterEdit:true});
            else alert("Please Select Row");
        },
    editurl: "/app/buyworksheetdetail/updategrid/"

Basically what it's doing is creating a grid of rows with only one cell in the row editable. If I click the cell, the modal pops up with the form for that cell. Changing the value and hitting submit works, the form is submited and I can print_r the post data but only the field I edited is passed.

I need to pass all the values in the row, but only want one editable. Any pointers? Thnx