jQuery Grid Plugin - jqGrid

When a second expression is entered in the Search window under IE8, the op code value for that expression is returned to the web server as "undefined". This happens regardless of the columns searched, op codes selected, and values entered. Under Firefox, the opcode for the second expression is returned to web server as expected. This happens under 3.8.2 and 3.7.2.

I've not yet looked at jqgird code, and am hoping that someone who is familiar with the code can easily address this.

If the html that results in the unexpected results would be helpful, just let me know.

Thanks.