JSPlumb连接分离后重新创建连接

我有div可以拖放到绘图区域。这些div可以使用鼠标从源端点拖放到目标端点手动连接。在链接连接时，这样创建的连接将被分离，但端点仍然存在，并且可以通过上述相同的手动过程重新创建已删除的连接。现在我也保存在json格式的连接节点流程图的形式的绘图到磁盘文件。加载文件后，流程图完美地显示了所有连接和节点。现在我在单击节点时删除了一个连接，它可以工作。但现在我无法再创造同样的联系了。旧节点端点已变得无响应。这是我的加载函数:-

函数loadDrawing(jsPlumb, clientName, fileName) {

var compositeObject = [ clientName.toString() , fileName.toString() ];
$.ajax({
    type: "post",
    url: contextPath+"/file/load",
    beforeSend: function(xhr) {
        xhr.setRequestHeader( "Content-type", "application/json" );
    },
    // Send client and file name to the server
    data : JSON.stringify(compositeObject),
    async:false,
    cache: false,
    contentType: false,
    success: function(response){
        var nodes = response.nodes;
        var endpoints = response.endpoints;
        var connections1 = response.connections;
        $.each(nodes, function( index, elem ) { 
              createElement( jsPlumb, elem.cssClass , elem.blockId , elem.nodetype , 
                    elem.dropStatus , elem.positionX, elem.positionY , elem.html, connections1["anchors"] );
        });
        var connections = response.connections;
        $.each(connections, function( index, elem ) {

             var connection1 = jsPlumb.connect({
              source: elem.pageSourceId,
              target: elem.pageTargetId,
              reattach: true,
              anchors: elem.anchors,
              endpoint:"Rectangle",
              maxConnections:-1, // Unlimited Connections .
              deleteEndpointsOnDetach:false,// Do not delete endpoints on connection removal.
              paintStyle:{ width:10 , height:10, strokeStyle:'#666' },
              isSource:true,
              connector: 'Flowchart' ,
              connectorStyle : { strokeStyle:"#666" },
              isTarget:true 
           });
        });
        // Reset global node counters 
        countLLC = response.counters[0].countLLC;
        countCCorp = response.counters[0].countCCorp;
        countSCorp = response.counters[0].countSCorp;
        countNonProfit = response.counters[0].countNonProfit;
        countSeries = response.counters[0].countSeries;
        countLivingTrust = response.counters[0].countLivingTrust;
        countLandTrust = response.counters[0].countLandTrust;
        countQRP = response.counters[0].countQRP;
        countLP = response.counters[0].countLP;
        wealthPlanningItemId = response.counters[0].countWPBNode;
        // Display detached captions
        for ( i=0 ; i<response.labelId.length ; i++)    {
            var detachedCaptionDiv =  $('<div>').attr('id',response.labelId[i].labelId)
                                            .html(response.labelContent[i].content);
            $('#nodeCaptionContainer1').append(detachedCaptionDiv);
        }
        alert("Image Open Successful .");
    }, 
    error: function(){      
        alert("Image Open Failure");
        } 
});

}

// Re-create nodes 
function createElement( jsPlumb , cssClass , nodeId , nodetype , dropStatus     , posX, posY , content, anchor1 )   {
var recreatedNode =  $('<div>').attr('id',nodeId).html( content );
recreatedNode.attr('title', nodetype );
recreatedNode.attr('dropstatus', dropStatus );
recreatedNode.attr('class', cssClass );
recreatedNode.css('position', 'absolute');
recreatedNode.css('left', posX+'px');
recreatedNode.css('top', posY+'px');

// Make nodes and their endpoints non-detachable
$(recreatedNode).removeClass("ui-draggable"); 
jsPlumb.draggable($(recreatedNode)); 


$("#content1").append(recreatedNode);

}

这是我的连接删除代码:-

jsPlumb.bind('click', function (connection, e) {
     jsPlumb.detach(connection);
});

我已经搜索了SOF, JSplumb谷歌组，JSplumb API文档，以及谷歌抛出的大多数相关链接，但无法找到任何帮助。请帮忙。