diff --git a/deploy/csp/index.js b/deploy/csp/index.js
index 51a3cf1598f93b61e0efdc38f4a2e80d40aba68c..7273c69b4e841bc5e0be5aa85d68fb8c10b15e09 100644
--- a/deploy/csp/index.js
+++ b/deploy/csp/index.js
@@ -111,7 +111,8 @@ module.exports = {
           'cdnjs.cloudflare.com/ajax/libs/d3/', // required for preview component
           'cdnjs.cloudflare.com/ajax/libs/mathjax/', // math jax
           'https://unpkg.com/three-surfer@0.0.11/dist/bundle.js', // for threeSurfer (freesurfer support in browser)
-          'https://unpkg.com/ng-layer-tune@0.0.5/dist/ng-layer-tune/', // needed for ng layer control
+          'https://unpkg.com/ng-layer-tune@0.0.6/dist/ng-layer-tune/', // needed for ng layer control
+          'https://unpkg.com/hbp-connectivity-component@0.6.2/', // needed for connectivity component
           (req, res) => res.locals.nonce ? `'nonce-${res.locals.nonce}'` : null,
           ...SCRIPT_SRC,
           ...WHITE_LIST_SRC,
diff --git a/src/atlasComponents/sapiViews/core/parcellation/parcellationVersion.pipe.spec.ts b/src/atlasComponents/sapiViews/core/parcellation/parcellationVersion.pipe.spec.ts
new file mode 100644
index 0000000000000000000000000000000000000000..5a7eb1fc32405cd1a4f9128cfda54c018eb45766
--- /dev/null
+++ b/src/atlasComponents/sapiViews/core/parcellation/parcellationVersion.pipe.spec.ts
@@ -0,0 +1,52 @@
+import { IDS } from "src/atlasComponents/sapi/constants"
+import { SAPI } from "src/atlasComponents/sapi/sapi.service"
+import { SapiParcellationModel } from "src/atlasComponents/sapi/type"
+import { getTraverseFunctions } from "./parcellationVersion.pipe"
+
+describe("parcellationVersion.pipe.ts", () => {
+  describe("getTraverseFunctions", () => {
+    let julichBrainParcellations: SapiParcellationModel[] = []
+    beforeAll(async () => {
+      const res = await fetch(`${SAPI.bsEndpoint}/atlases/${encodeURIComponent(IDS.ATLAES.HUMAN)}/parcellations`)
+      const arr: SapiParcellationModel[] = await res.json()
+      julichBrainParcellations = arr.filter(it => /Julich-Brain Cytoarchitectonic Maps/.test(it.name))
+    })
+    it("> should be at least 3 parcellations", () => {
+      expect(julichBrainParcellations.length).toBeGreaterThanOrEqual(3)
+    })
+
+    const scenarios = [{
+      name: "default",
+      inputFlag: undefined,
+      expect25: false
+    },{
+      name: "skipDeprecated set to true",
+      inputFlag: true,
+      expect25: false
+    },{
+      name: "skipDeprecated set to false",
+      inputFlag: false,
+      expect25: true
+    }]
+
+    for (const { name, inputFlag, expect25} of scenarios) {
+      describe(name, () => {
+        it(`expect to find 25: ${expect25}`, () => {
+          const { findNewer, findOldest } = typeof inputFlag === "undefined"
+          ? getTraverseFunctions(julichBrainParcellations)
+          : getTraverseFunctions(julichBrainParcellations, inputFlag)
+          let cursor: SapiParcellationModel = findOldest()
+          let foundFlag: boolean = false
+          while (cursor) {
+            if (cursor.name === "Julich-Brain Cytoarchitectonic Maps 2.5") {
+              if (expect25) foundFlag = true
+              break
+            }
+            cursor = findNewer(cursor)
+          }
+          expect(foundFlag).toEqual(expect25)
+        })
+      })
+    }
+  })
+})
\ No newline at end of file
diff --git a/src/atlasComponents/sapiViews/core/parcellation/parcellationVersion.pipe.ts b/src/atlasComponents/sapiViews/core/parcellation/parcellationVersion.pipe.ts
index 506acc493479285eb4271aee38f5cd1798174fda..a2e5e1f3ff73e2b3ec837188c52c5670e4348e46 100644
--- a/src/atlasComponents/sapiViews/core/parcellation/parcellationVersion.pipe.ts
+++ b/src/atlasComponents/sapiViews/core/parcellation/parcellationVersion.pipe.ts
@@ -1,20 +1,28 @@
 import { Pipe, PipeTransform } from "@angular/core";
 import { SapiParcellationModel } from "src/atlasComponents/sapi/type";
 
-export function getTraverseFunctions(parcellations: SapiParcellationModel[]) {
+export function getTraverseFunctions(parcellations: SapiParcellationModel[], skipDeprecated: boolean = true) {
 
-  const getTraverse = (key: 'prev' | 'next') => (parc: SapiParcellationModel) => {
-    if (!parc.version) {
-      throw new Error(`parcellation ${parc.name} does not have version defined!`)
-    }
-    if (!parc.version[key]) {
-      return null
-    }
-    const found = parcellations.find(p => p["@id"] === parc.version[key]["@id"])
-    if (!found) {
-      throw new Error(`parcellation ${parc.name} references ${parc.version[key]['@id']} as ${key} version, but it cannot be found.`)
+  const getTraverse = (key: 'prev' | 'next') => {
+
+    const returnFunction = (parc: SapiParcellationModel) => {
+      if (!parc.version) {
+        throw new Error(`parcellation ${parc.name} does not have version defined!`)
+      }
+      if (!parc.version[key]) {
+        return null
+      }
+      const found = parcellations.find(p => p["@id"] === parc.version[key]["@id"])
+      if (!found) {
+        throw new Error(`parcellation ${parc.name} references ${parc.version[key]['@id']} as ${key} version, but it cannot be found.`)
+      }
+      if (skipDeprecated && found.version.deprecated) {
+        return returnFunction(found)
+      }
+      return found
     }
-    return found
+
+    return returnFunction
   }
   
   const findNewer = getTraverse('next')
diff --git a/src/index.html b/src/index.html
index 73874be6ee8682b4dbd5c5ba2a1882568f62c1aa..56e924d2b7181e2344f5bb912174a8013a52bde2 100644
--- a/src/index.html
+++ b/src/index.html
@@ -16,7 +16,7 @@
   <script src="https://unpkg.com/three-surfer@0.0.11/dist/bundle.js" defer></script>
   <script type="module" src="https://unpkg.com/ng-layer-tune@0.0.6/dist/ng-layer-tune/ng-layer-tune.esm.js"></script>
   <script type="module" src="https://unpkg.com/hbp-connectivity-component@0.6.2/dist/connectivity-component/connectivity-component.js" ></script>
-  <title>Interactive Atlas Viewer</title>
+  <title>Siibra Explorer</title>
 </head>
 <body>
   <atlas-viewer>