KO + custom binding + Datatables + Updating

HTML

<script src="http://knockoutjs.com/downloads/knockout-2.2.1.js"></script>
<script src="http://raw.githubusercontent.com/SteveSanderson/knockout.mapping/master/build/output/knockout.mapping-latest.js"></script>
<script src="http://cdn.datatables.net/1.10.0/js/jquery.dataTables.js"></script>

<script src="http://cdn.datatables.net/colreorder/1.1.1/js/dataTables.colReorder.js"></script>

<script src="http://raw.githubusercontent.com/SteveSanderson/knockout.mapping/master/build/output/knockout.mapping-latest.js"></script>

<input id="s"/>
<input type="button" value="Update" id='u' />
<hr/>
<div id="demo2" class="" 
     data-bind="datatable:{options:options }" 
     style="min-width: 310px; height: 200px; margin: 0 auto"></div>

JavaScript

//===================================================================

(function(e){"function"===typeof require&&"object"===typeof exports&&"object"===typeof module?e(require("knockout"),exports):"function"===typeof define&&define.amd?define(["knockout","exports"],e):e(ko,ko.mapping={})})(function(e,f){function y(b,c){var a,d;for(d in c)if(c.hasOwnProperty(d)&&c[d])if(a=f.getType(b[d]),d&&b[d]&&"array"!==a&&"string"!==a)y(b[d],c[d]);else if("array"===f.getType(b[d])&&"array"===f.getType(c[d])){a=b;for(var e=d,l=b[d],n=c[d],t={},g=l.length-1;0<=g;--g)t[l[g]]=l[g];for(g=
n.length-1;0<=g;--g)t[n[g]]=n[g];l=[];n=void 0;for(n in t)l.push(t[n]);a[e]=l}else b[d]=c[d]}function E(b,c){var a={};y(a,b);y(a,c);return a}function z(b,c){for(var a=E({},b),e=L.length-1;0<=e;e--){var f=L[e];a[f]&&(a[""]instanceof Object||(a[""]={}),a[""][f]=a[f],delete a[f])}c&&(a.ignore=h(c.ignore,a.ignore),a.include=h(c.include,a.include),a.copy=h(c.copy,a.copy),a.observe=h(c.observe,a.observe));a.ignore=h(a.ignore,j.ignore);a.include=h(a.include,j.include);a.copy=h(a.copy,j.copy);a.observe=h(a.observe,
j.observe);a.mappedProperties=a.mappedProperties||{};a.copiedProperties=a.copiedProperties||{};return a}function h(b,c){"array"!==f.getType(b)&&(b="undefined"===f.getType(b)?[]:[b]);"array"!==f.getType(c)&&(c="undefined"===f.getType(c)?[]:[c]);return e.utils.arrayGetDistinctValues(b.concat(c))}function F(b,c,a,d,k,l,n){var t="array"===f.getType(e.utils.unwrapObservable(c));l=l||"";if(f.isMapped(b)){var g=e.utils.unwrapObservable(b)[p];a=E(g,a)}var j=n||k,h=function(){return a[d]&&a[d].create instanceof
Function},x=function(b){var f=G,g=e.dependentObservable;e.dependentObservable=function(a,b,c){c=c||{};a&&"object"==typeof a&&(c=a);var d=c.deferEvaluation,M=!1;c.deferEvaluation=!0;a=new H(a,b,c);if(!d){var g=a,d=e.dependentObservable;e.dependentObservable=H;a=e.isWriteableObservable(g);e.dependentObservable=d;d=H({read:function(){M||(e.utils.arrayRemoveItem(f,g),M=!0);return...