diff --git a/src/assets/wise5/services/moveNodesService.ts b/src/assets/wise5/services/moveNodesService.ts
index 773c0c2c7fe..e77d43be9e4 100644
--- a/src/assets/wise5/services/moveNodesService.ts
+++ b/src/assets/wise5/services/moveNodesService.ts
@@ -35,12 +35,12 @@ export class MoveNodesService {
         this.projectService.removeNodeIdFromGroups(nodeId);
 
         if (n == 0) {
-          this.projectService.moveFromActiveToInactiveInsertInside(node, groupNodeId);
+          this.moveFromActiveToInactiveInsertInside(node, groupNodeId);
         } else {
-          this.projectService.moveToInactive(node, groupNodeId);
+          this.moveToInactive(node, groupNodeId);
         }
       } else if (!movingNodeIsActive && stationaryNodeIsActive) {
-        this.projectService.moveToActive(node);
+        this.moveToActive(node);
 
         if (n == 0) {
           this.projectService.insertNodeInsideOnlyUpdateTransitions(nodeId, groupNodeId);
@@ -54,7 +54,7 @@ export class MoveNodesService {
         this.projectService.removeNodeIdFromGroups(nodeId);
 
         if (n == 0) {
-          this.projectService.moveFromInactiveToInactiveInsertInside(node, groupNodeId);
+          this.moveFromInactiveToInactiveInsertInside(node, groupNodeId);
         } else {
           this.moveInactiveNodeToInactiveSection(node, groupNodeId);
         }
@@ -65,6 +65,100 @@ export class MoveNodesService {
     return movedNodes;
   }
 
+  /**
+   * Move the node from active to inside an inactive group
+   * @param node the node to move
+   * @param nodeIdToInsertInside place the node inside this
+   */
+  private moveFromActiveToInactiveInsertInside(node: any, nodeIdToInsertInside: string): void {
+    this.removeNodeFromActiveNodes(node.id);
+    this.projectService.addInactiveNodeInsertInside(node, nodeIdToInsertInside);
+  }
+
+  /**
+   * Remove the node from the active nodes.
+   * If the node is a group node, also remove its children.
+   * @param nodeId the node to remove
+   * @returns the node that was removed
+   */
+  private removeNodeFromActiveNodes(nodeId: string): any {
+    let nodeRemoved = null;
+    const activeNodes = this.projectService.project.nodes;
+    for (let a = 0; a < activeNodes.length; a++) {
+      const activeNode = activeNodes[a];
+      if (activeNode.id === nodeId) {
+        activeNodes.splice(a, 1);
+        nodeRemoved = activeNode;
+        if (activeNode.type === 'group') {
+          this.removeChildNodesFromActiveNodes(activeNode);
+        }
+        break;
+      }
+    }
+    return nodeRemoved;
+  }
+
+  /**
+   * Move the child nodes of a group from the active nodes.
+   * @param node The group node.
+   */
+  private removeChildNodesFromActiveNodes(node: any): void {
+    for (const childId of node.ids) {
+      this.removeNodeFromActiveNodes(childId);
+    }
+  }
+
+  /**
+   * Move the node to the active nodes array. If the node is a group node,
+   * also move all of its children to active.
+   */
+  private moveToActive(node: any): void {
+    this.projectService.removeNodeFromInactiveNodes(node.id);
+    this.projectService.addNode(node);
+    if (this.projectService.isGroupNode(node.id)) {
+      for (const childId of node.ids) {
+        this.projectService.addNode(this.projectService.removeNodeFromInactiveNodes(childId));
+      }
+    }
+  }
+
+  /**
+   * Move the node from inactive to inside an inactive group
+   * @param node the node to move
+   * @param nodeIdToInsertInside place the node inside this
+   */
+  private moveFromInactiveToInactiveInsertInside(node: any, nodeIdToInsertInside: string): void {
+    this.projectService.removeNodeFromInactiveNodes(node.id);
+    if (this.projectService.isGroupNode(node.id)) {
+      /*
+       * remove the group's child nodes from our data structures so that we can
+       * add them back in later
+       */
+      for (const childId of node.ids) {
+        const childNode = this.projectService.getNodeById(childId);
+        const inactiveNodesIndex = this.projectService.project.inactiveNodes.indexOf(childNode);
+        if (inactiveNodesIndex != -1) {
+          this.projectService.project.inactiveNodes.splice(inactiveNodesIndex, 1);
+        }
+        const inactiveStepNodesIndex = this.projectService.inactiveStepNodes.indexOf(childNode);
+        if (inactiveStepNodesIndex != -1) {
+          this.projectService.inactiveStepNodes.splice(inactiveStepNodesIndex, 1);
+        }
+      }
+    }
+    this.projectService.addInactiveNodeInsertInside(node, nodeIdToInsertInside);
+  }
+
+  /**
+   * Move an active node to the inactive nodes array.
+   * @param node the node to move
+   * @param nodeIdToInsertAfter place the node after this
+   */
+  private moveToInactive(node: any, nodeIdToInsertAfter: string): void {
+    this.removeNodeFromActiveNodes(node.id);
+    this.projectService.addInactiveNodeInsertAfter(node, nodeIdToInsertAfter);
+  }
+
   /**
    * Move nodes after a certain node id
    * @param nodeIds the node ids to move
@@ -85,9 +179,9 @@ export class MoveNodesService {
       } else if (movingNodeIsActive && !stationaryNodeIsActive) {
         this.projectService.removeNodeIdFromTransitions(nodeId);
         this.projectService.removeNodeIdFromGroups(nodeId);
-        this.projectService.moveToInactive(node, moveAfterNodeId);
+        this.moveToInactive(node, moveAfterNodeId);
       } else if (!movingNodeIsActive && stationaryNodeIsActive) {
-        this.projectService.moveToActive(node);
+        this.moveToActive(node);
         this.projectService.insertNodeAfterInGroups(nodeId, moveAfterNodeId);
         this.projectService.insertNodeAfterInTransitions(node, moveAfterNodeId);
       } else if (!movingNodeIsActive && !stationaryNodeIsActive) {
diff --git a/src/assets/wise5/services/teacherProjectService.ts b/src/assets/wise5/services/teacherProjectService.ts
index 8136a2023c7..44ee78a0fbf 100644
--- a/src/assets/wise5/services/teacherProjectService.ts
+++ b/src/assets/wise5/services/teacherProjectService.ts
@@ -478,51 +478,6 @@ export class TeacherProjectService extends ProjectService {
     return firstLeafNodeId;
   }
 
-  /**
-   * Remove the node from the active nodes.
-   * If the node is a group node, also remove its children.
-   * @param nodeId the node to remove
-   * @returns the node that was removed
-   */
-  removeNodeFromActiveNodes(nodeId) {
-    let nodeRemoved = null;
-    const activeNodes = this.project.nodes;
-    for (let a = 0; a < activeNodes.length; a++) {
-      const activeNode = activeNodes[a];
-      if (activeNode.id === nodeId) {
-        activeNodes.splice(a, 1);
-        nodeRemoved = activeNode;
-        if (activeNode.type === 'group') {
-          this.removeChildNodesFromActiveNodes(activeNode);
-        }
-        break;
-      }
-    }
-    return nodeRemoved;
-  }
-
-  /**
-   * Move the child nodes of a group from the active nodes.
-   * @param node The group node.
-   */
-  removeChildNodesFromActiveNodes(node) {
-    for (const childId of node.ids) {
-      this.removeNodeFromActiveNodes(childId);
-    }
-  }
-
-  /**
-   * Move an active node to the inactive nodes array.
-   * @param node the node to move
-   * @param nodeIdToInsertAfter place the node after this
-   */
-  moveToInactive(node, nodeIdToInsertAfter) {
-    if (this.isActive(node.id)) {
-      this.removeNodeFromActiveNodes(node.id);
-      this.addInactiveNodeInsertAfter(node, nodeIdToInsertAfter);
-    }
-  }
-
   /**
    * Add the node to the inactive nodes array.
    * @param node the node to move
@@ -573,43 +528,6 @@ export class TeacherProjectService extends ProjectService {
     );
   }
 
-  /**
-   * Move the node from active to inside an inactive group
-   * @param node the node to move
-   * @param nodeIdToInsertInside place the node inside this
-   */
-  moveFromActiveToInactiveInsertInside(node, nodeIdToInsertInside) {
-    this.removeNodeFromActiveNodes(node.id);
-    this.addInactiveNodeInsertInside(node, nodeIdToInsertInside);
-  }
-
-  /**
-   * Move the node from inactive to inside an inactive group
-   * @param node the node to move
-   * @param nodeIdToInsertInside place the node inside this
-   */
-  moveFromInactiveToInactiveInsertInside(node, nodeIdToInsertInside) {
-    this.removeNodeFromInactiveNodes(node.id);
-    if (this.isGroupNode(node.id)) {
-      /*
-       * remove the group's child nodes from our data structures so that we can
-       * add them back in later
-       */
-      for (const childId of node.ids) {
-        const childNode = this.getNodeById(childId);
-        const inactiveNodesIndex = this.project.inactiveNodes.indexOf(childNode);
-        if (inactiveNodesIndex != -1) {
-          this.project.inactiveNodes.splice(inactiveNodesIndex, 1);
-        }
-        const inactiveStepNodesIndex = this.inactiveStepNodes.indexOf(childNode);
-        if (inactiveStepNodesIndex != -1) {
-          this.inactiveStepNodes.splice(inactiveStepNodesIndex, 1);
-        }
-      }
-    }
-    this.addInactiveNodeInsertInside(node, nodeIdToInsertInside);
-  }
-
   addInactiveNodeInsertInside(node, nodeIdToInsertInside = null) {
     this.clearTransitionsFromNode(node);
     if (this.isNodeIdToInsertTargetNotSpecified(nodeIdToInsertInside)) {
@@ -2222,22 +2140,6 @@ export class TeacherProjectService extends ProjectService {
     }
   }
 
-  /**
-   * Move the node to the active nodes array. If the node is a group node,
-   * also move all of its children to active.
-   */
-  moveToActive(node) {
-    if (!this.isActive(node.id)) {
-      this.removeNodeFromInactiveNodes(node.id);
-      this.addNode(node);
-      if (this.isGroupNode(node.id)) {
-        for (const childId of node.ids) {
-          this.addNode(this.removeNodeFromInactiveNodes(childId));
-        }
-      }
-    }
-  }
-
   /**
    * Add a group's cthild nodes to the inactive nodes.
    * @param node The group node.