Book Marking - IE9 Good IE8 Bad

We are migrating to SuccessFactors LMS B1308. We have storyline courses which are working in the existing version and bookmark fine with IE8. In the new version it is not working. There is additional code being added to the bookmark function in IE8 that does not for IE9. IE9 works fine. The content launch method is SCORM 1.2. Here are the examples:

IE9 Good:

129:Thu Mar 20 07:37:13 EDT 2014 - SCORM_CallLMSSetValue strElement=cmi.suspend_data, strValue=viewed=1,2,3,4,5|lastviewedslide=1|0#2##,11,1,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,1,0,0,0,0,1,1,1,0#0##-1

242:Thu Mar 20 07:37:29 EDT 2014 - SCORM_CallLMSSetValue strElement=cmi.suspend_data, strValue=viewed=1,2,3,4,5,6|lastviewedslide=6|5#1##,7,23,23,23,23,27,1,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,1,0,0,0,0,1,1,1,0#0##-1

IE8 Bad:

140:Mon Mar 17 08:16:18 EDT 2014 - SCORM_CallLMSSetValue strElement=cmi.suspend_data, strValue=viewed=1,2,3,4|lastviewedslide=1|4#1##,7,23,23,31,1,1,1,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,1,0,0,0,0,1,1,1,0#0##-1 insertAt=function (item, index) { this.splice(index, 0, item); } compare=function (array) { // if the other array is a falsy value, return if (!array) return false; // compare lengths - can save a lot of time if (this.length != array.length) return false; for (var i = 0; i < this.length; i++) { // Check if we have nested arrays if (this[i] instanceof Array && array[i] instanceof Array) { // recurse into the nested arrays if (!this[i].compare(array[i])) return false; } else if (this[i] != array[i]) { // Warning - two different object instances will never be equal: {x:20} != {x:20} return false; } } return true; } indexOf=function (searchElement /*, fromIndex */ ) { "use strict"; if (this == null) { throw new TypeError(); } var t = Object(this); var len = t.length >>> 0; if (len === 0) { return -1; } var n = 0; if (arguments.length > 1) { n = Number(arguments[1]); if (n != n) { // shortcut for verifying if it's NaN n = 0; } else if (n != 0 && n != Infinity && n != -Infinity) { n = (n > 0

I can see that the additional data ends with a truncated string/argument.

Anyone have any ideas or clues

Thanks.

Cheers Andy.