diff --git a/lib/utils/member-info-utils-test-data.js b/lib/utils/member-info-utils-test-data.js
new file mode 100644
--- /dev/null
+++ b/lib/utils/member-info-utils-test-data.js
@@ -0,0 +1,215 @@
+// @flow
+
+import type { RawThreadInfo } from '../types/minimally-encoded-thread-permissions-types.js';
+
+const rawThreadInfoWithMemberPermissions: any = {
+  minimallyEncoded: true,
+  id: '76F9CE14-9106-4DD3-A69C-CFDC8E9CAC38|1',
+  type: 12,
+  name: 'GENESIS',
+  description:
+    'This is the first community on Comm. In the future it will be possible to create chats outside of a community, but for now all of these chats get set with GENESIS as their parent. GENESIS is hosted on Ashoat’s keyserver.',
+  color: '008f83',
+  creationTime: 3764,
+  parentThreadID: null,
+  containingThreadID: null,
+  community: null,
+  members: [
+    {
+      id: '83814',
+      role: '76F9CE14-9106-4DD3-A69C-CFDC8E9CAC38|83795',
+      permissions: '3',
+      isSender: false,
+      minimallyEncoded: true,
+    },
+    {
+      id: '76F9CE14-9106-4DD3-A69C-CFDC8E9CAC38',
+      role: '76F9CE14-9106-4DD3-A69C-CFDC8E9CAC38|83820',
+      permissions: '2f7fff',
+      isSender: true,
+      minimallyEncoded: true,
+    },
+    {
+      id: '83814',
+      role: '76F9CE14-9106-4DD3-A69C-CFDC8E9CAC38|83820',
+      permissions: '3027f',
+      isSender: false,
+      minimallyEncoded: true,
+    },
+  ],
+  roles: {
+    '76F9CE14-9106-4DD3-A69C-CFDC8E9CAC38|83795': {
+      id: '76F9CE14-9106-4DD3-A69C-CFDC8E9CAC38|83795',
+      name: 'Members',
+      permissions: ['000', '010', '005', '015', '0a7'],
+      minimallyEncoded: true,
+      specialRole: 1,
+    },
+    '76F9CE14-9106-4DD3-A69C-CFDC8E9CAC38|83796': {
+      id: '76F9CE14-9106-4DD3-A69C-CFDC8E9CAC38|83796',
+      name: 'Admins',
+      permissions: [
+        '000',
+        '010',
+        '020',
+        '100',
+        '110',
+        '030',
+        '040',
+        '060',
+        '050',
+        '120',
+        '080',
+        '090',
+        '070',
+        '0d0',
+        '0e0',
+        '130',
+        '140',
+        '150',
+        '160',
+        '004',
+        '014',
+        '0a6',
+        '0a8',
+        '024',
+        '034',
+        '044',
+        '064',
+        '054',
+        '124',
+        '086',
+        '096',
+        '0c4',
+        '074',
+        '0b4',
+        '0d4',
+        '0e4',
+        '134',
+        '156',
+        '0c0',
+      ],
+      minimallyEncoded: true,
+      specialRole: 2,
+    },
+  },
+  currentUser: {
+    role: '76F9CE14-9106-4DD3-A69C-CFDC8E9CAC38|83795',
+    permissions: '3',
+    subscription: {
+      home: true,
+      pushNotifs: true,
+    },
+    unread: false,
+    minimallyEncoded: true,
+  },
+  repliesCount: 0,
+  pinnedCount: 0,
+};
+
+const rawThreadInfoSansMemberPermissions: RawThreadInfo = {
+  minimallyEncoded: true,
+  id: '76F9CE14-9106-4DD3-A69C-CFDC8E9CAC38|1',
+  type: 12,
+  name: 'GENESIS',
+  description:
+    'This is the first community on Comm. In the future it will be possible to create chats outside of a community, but for now all of these chats get set with GENESIS as their parent. GENESIS is hosted on Ashoat’s keyserver.',
+  color: '008f83',
+  creationTime: 3764,
+  parentThreadID: null,
+  containingThreadID: null,
+  community: null,
+  members: [
+    {
+      id: '83814',
+      role: '76F9CE14-9106-4DD3-A69C-CFDC8E9CAC38|83795',
+      isSender: false,
+      minimallyEncoded: true,
+    },
+    {
+      id: '76F9CE14-9106-4DD3-A69C-CFDC8E9CAC38',
+      role: '76F9CE14-9106-4DD3-A69C-CFDC8E9CAC38|83820',
+      isSender: true,
+      minimallyEncoded: true,
+    },
+    {
+      id: '83814',
+      role: '76F9CE14-9106-4DD3-A69C-CFDC8E9CAC38|83820',
+      isSender: false,
+      minimallyEncoded: true,
+    },
+  ],
+  roles: {
+    '76F9CE14-9106-4DD3-A69C-CFDC8E9CAC38|83795': {
+      id: '76F9CE14-9106-4DD3-A69C-CFDC8E9CAC38|83795',
+      name: 'Members',
+      permissions: ['000', '010', '005', '015', '0a7'],
+      minimallyEncoded: true,
+      specialRole: 1,
+    },
+    '76F9CE14-9106-4DD3-A69C-CFDC8E9CAC38|83796': {
+      id: '76F9CE14-9106-4DD3-A69C-CFDC8E9CAC38|83796',
+      name: 'Admins',
+      permissions: [
+        '000',
+        '010',
+        '020',
+        '100',
+        '110',
+        '030',
+        '040',
+        '060',
+        '050',
+        '120',
+        '080',
+        '090',
+        '070',
+        '0d0',
+        '0e0',
+        '130',
+        '140',
+        '150',
+        '160',
+        '004',
+        '014',
+        '0a6',
+        '0a8',
+        '024',
+        '034',
+        '044',
+        '064',
+        '054',
+        '124',
+        '086',
+        '096',
+        '0c4',
+        '074',
+        '0b4',
+        '0d4',
+        '0e4',
+        '134',
+        '156',
+        '0c0',
+      ],
+      minimallyEncoded: true,
+      specialRole: 2,
+    },
+  },
+  currentUser: {
+    role: '76F9CE14-9106-4DD3-A69C-CFDC8E9CAC38|83795',
+    permissions: '3',
+    subscription: {
+      home: true,
+      pushNotifs: true,
+    },
+    unread: false,
+    minimallyEncoded: true,
+  },
+  repliesCount: 0,
+  pinnedCount: 0,
+};
+
+export {
+  rawThreadInfoWithMemberPermissions,
+  rawThreadInfoSansMemberPermissions,
+};
diff --git a/lib/utils/member-info-utils.js b/lib/utils/member-info-utils.js
--- a/lib/utils/member-info-utils.js
+++ b/lib/utils/member-info-utils.js
@@ -1,8 +1,11 @@
 // @flow
 
+import invariant from 'invariant';
+
 import type {
   MemberInfoSansPermissions,
   MemberInfoWithPermissions,
+  RawThreadInfo,
 } from '../types/minimally-encoded-thread-permissions-types.js';
 
 function stripPermissionsFromMemberInfo(
@@ -12,4 +15,20 @@
   return rest;
 }
 
-export { stripPermissionsFromMemberInfo };
+function stripMemberPermissionsFromRawThreadInfo(
+  rawThreadInfo: RawThreadInfo,
+): RawThreadInfo {
+  invariant(
+    !rawThreadInfo.thick,
+    'Expect ThinRawThreadInfo in stripMemberPermissionsFromRawThreadInfo',
+  );
+  return {
+    ...rawThreadInfo,
+    members: rawThreadInfo.members.map(stripPermissionsFromMemberInfo),
+  };
+}
+
+export {
+  stripPermissionsFromMemberInfo,
+  stripMemberPermissionsFromRawThreadInfo,
+};
diff --git a/lib/utils/member-info-utils.test.js b/lib/utils/member-info-utils.test.js
--- a/lib/utils/member-info-utils.test.js
+++ b/lib/utils/member-info-utils.test.js
@@ -1,9 +1,17 @@
 // @flow
 
-import { stripPermissionsFromMemberInfo } from './member-info-utils.js';
+import {
+  rawThreadInfoSansMemberPermissions,
+  rawThreadInfoWithMemberPermissions,
+} from './member-info-utils-test-data.js';
+import {
+  stripMemberPermissionsFromRawThreadInfo,
+  stripPermissionsFromMemberInfo,
+} from './member-info-utils.js';
 import type {
   MemberInfoSansPermissions,
   MemberInfoWithPermissions,
+  RawThreadInfo,
 } from '../types/minimally-encoded-thread-permissions-types.js';
 
 describe('stripPermissionsFromMemberInfo', () => {
@@ -27,3 +35,14 @@
     });
   });
 });
+
+describe('stripMemberPermissionsFromRawThreadInfo', () => {
+  test('should produce valid RawThreadInfo', () => {
+    const strippedRawThreadInfo: RawThreadInfo =
+      stripMemberPermissionsFromRawThreadInfo(
+        rawThreadInfoWithMemberPermissions,
+      );
+
+    expect(strippedRawThreadInfo).toEqual(rawThreadInfoSansMemberPermissions);
+  });
+});