[fixbug-4570][ui] When deleting a workflow connection, all connections disappear

dolphinscheduler-ui/src/js/conf/home/pages/dag/_source/plugIn/jsPlumbHandle.js

@@ -627,6 +627,7 @@ JSP.prototype.saveStore = function () {
         tasks.push(tasksParam)
       }
     })
+    console.log(store.state.dag.connects.length, this.JspInstance.getConnections().length)
     if (store.state.dag.connects.length === this.JspInstance.getConnections().length) {
       _.map(store.state.dag.connects, u => {
         connects.push({
@@ -658,6 +659,14 @@ JSP.prototype.saveStore = function () {
           label: v._jsPlumb.overlays.label.canvas.innerText
         })
       })
+    } else if (store.state.dag.connects.length > this.JspInstance.getConnections().length) {
+      _.map(this.JspInstance.getConnections(), v => {
+        connects.push({
+          endPointSourceId: v.sourceId,
+          endPointTargetId: v.targetId,
+          label: v._jsPlumb.overlays.label.canvas.innerText
+        })
+      })
     }
 
     _.map(tasksAll(), v => {