diff --git a/src/editors/data/services/cms/api.js b/src/editors/data/services/cms/api.js
index 8b44af45b..b1e407ad6 100644
--- a/src/editors/data/services/cms/api.js
+++ b/src/editors/data/services/cms/api.js
@@ -9,12 +9,9 @@ export const apiMethods = {
   fetchBlockById: ({ blockId, studioEndpointUrl }) => get(
     urls.block({ blockId, studioEndpointUrl }),
   ),
-  fetchByUnitId: ({ blockId, studioEndpointUrl }) => {
-    if (blockId.includes('block-v1')) {
-      return get(urls.blockAncestor({ studioEndpointUrl, blockId }));
-    }
-    return '';
-  },
+  fetchByUnitId: ({ blockId, studioEndpointUrl }) => get(
+    urls.blockAncestor({ studioEndpointUrl, blockId }),
+  ),
   fetchStudioView: ({ blockId, studioEndpointUrl }) => get(
     urls.blockStudioView({ studioEndpointUrl, blockId }),
   ),
diff --git a/src/editors/data/services/cms/api.test.js b/src/editors/data/services/cms/api.test.js
index fd16a906d..289ec8ed9 100644
--- a/src/editors/data/services/cms/api.test.js
+++ b/src/editors/data/services/cms/api.test.js
@@ -45,7 +45,6 @@ const { camelize } = utils;
 const { apiMethods } = api;
 
 const blockId = 'block-v1-coursev1:2uX@4345432';
-const v2BlockId = '???-coursev2:2uX@4345432';
 const learningContextId = 'demo2uX';
 const studioEndpointUrl = 'hortus.coa';
 const title = 'remember this needs to go into metadata to save';
@@ -67,10 +66,6 @@ describe('cms api', () => {
         apiMethods.fetchByUnitId({ blockId, studioEndpointUrl });
         expect(get).toHaveBeenCalledWith(urls.blockAncestor({ studioEndpointUrl, blockId }));
       });
-      it('should not call get with url.blockAncestor for v2', () => {
-        apiMethods.fetchByUnitId({ blockId: v2BlockId, studioEndpointUrl });
-        expect(get).not.toHaveBeenCalledWith(urls.blockAncestor({ studioEndpointUrl, blockId: v2BlockId }));
-      });
     });
 
     describe('fetchStudioView', () => {
diff --git a/src/editors/data/services/cms/urls.js b/src/editors/data/services/cms/urls.js
index 08518a843..ad402b60d 100644
--- a/src/editors/data/services/cms/urls.js
+++ b/src/editors/data/services/cms/urls.js
@@ -13,7 +13,10 @@ export const returnUrl = ({ studioEndpointUrl, unitUrl, learningContextId }) =>
   }
   if (learningContextId && learningContextId.startsWith('lib')) {
     // when it's a v2 library, there will be no return url (instead a closed popup)
-    throw new Error('Return url not available (or needed) for V2 libraries');
+    // (temporary) don't throw error, just return empty url. it will fail it's network connection but otherwise
+    // the app will run
+    // throw new Error('Return url not available (or needed) for V2 libraries');
+    return '';
   }
   // when the learning context is a course, return to the unit page
   if (unitUrl) {
@@ -33,7 +36,10 @@ export const blockAncestor = ({ studioEndpointUrl, blockId }) => {
     return `${block({ studioEndpointUrl, blockId })}?fields=ancestorInfo`;
   }
   // this url only need to get info to build the return url, which isn't used by V2 blocks
-  throw new Error('Block ancestor not available (and not needed) for V2 blocks');
+  // (temporary) don't throw error, just return empty url. it will fail it's network connection but otherwise
+  // the app will run
+  // throw new Error('Block ancestor not available (and not needed) for V2 blocks');
+  return '';
 };
 
 export const blockStudioView = ({ studioEndpointUrl, blockId }) => (
diff --git a/src/editors/data/services/cms/urls.test.js b/src/editors/data/services/cms/urls.test.js
index 6834fd8b4..b1aacc287 100644
--- a/src/editors/data/services/cms/urls.test.js
+++ b/src/editors/data/services/cms/urls.test.js
@@ -47,9 +47,13 @@ describe('cms url methods', () => {
       expect(returnUrl({ studioEndpointUrl, unitUrl, learningContextId: libraryLearningContextId }))
         .toEqual(`${studioEndpointUrl}/library/${libraryLearningContextId}`);
     });
-    it('throws error when given the v2 library', () => {
-      expect(() => { returnUrl({ studioEndpointUrl, unitUrl, learningContextId: libraryV2Id }); })
-        .toThrow('Return url not available (or needed) for V2 libraries');
+    // it('throws error when given the v2 library', () => {
+    //   expect(() => { returnUrl({ studioEndpointUrl, unitUrl, learningContextId: libraryV2Id }); })
+    //     .toThrow('Return url not available (or needed) for V2 libraries');
+    // });
+    it('returns empty url when given the v2 library', () => {
+      expect(returnUrl({ studioEndpointUrl, unitUrl, learningContextId: libraryV2Id }))
+        .toEqual('');
     });
     it('returns url with studioEndpointUrl and unitUrl', () => {
       expect(returnUrl({ studioEndpointUrl, unitUrl, learningContextId: courseId }))
@@ -83,9 +87,14 @@ describe('cms url methods', () => {
       expect(blockAncestor({ studioEndpointUrl, blockId }))
         .toEqual(`${block({ studioEndpointUrl, blockId })}?fields=ancestorInfo`);
     });
-    it('throws error with studioEndpointUrl, v2 blockId and ancestor query', () => {
-      expect(() => { blockAncestor({ studioEndpointUrl, blockId: v2BlockId }); })
-        .toThrow('Block ancestor not available (and not needed) for V2 blocks');
+    // This test will probably be used in the future
+    // it('throws error with studioEndpointUrl, v2 blockId and ancestor query', () => {
+    //   expect(() => { blockAncestor({ studioEndpointUrl, blockId: v2BlockId }); })
+    //     .toThrow('Block ancestor not available (and not needed) for V2 blocks');
+    // });
+    it('returns blank url with studioEndpointUrl, v2 blockId and ancestor query', () => {
+      expect(blockAncestor({ studioEndpointUrl, blockId: v2BlockId }))
+        .toEqual('');
     });
   });
   describe('blockStudioView', () => {