diff --git a/functions/src/create-contract.ts b/functions/src/create-contract.ts
index 17feb127..44ced6a8 100644
--- a/functions/src/create-contract.ts
+++ b/functions/src/create-contract.ts
@@ -14,7 +14,7 @@ import {
 import { slugify } from '../../common/util/slugify'
 import { randomString } from '../../common/util/random'
 
-import { chargeUser } from './utils'
+import { chargeUser, getContract } from './utils'
 import { APIError, newEndpoint, validate, zTimestamp } from './api'
 
 import {
@@ -28,12 +28,11 @@ import { Answer, getNoneAnswer } from '../../common/answer'
 import { getNewContract } from '../../common/new-contract'
 import { NUMERIC_BUCKET_COUNT } from '../../common/numeric-constants'
 import { User } from '../../common/user'
-import { Group, MAX_ID_LENGTH } from '../../common/group'
+import { Group, GroupLink, MAX_ID_LENGTH } from '../../common/group'
 import { getPseudoProbability } from '../../common/pseudo-numeric'
 import { JSONContent } from '@tiptap/core'
 import { uniq, zip } from 'lodash'
 import { Bet } from '../../common/bet'
-import { createGroupLinks } from './on-update-group'
 
 const descScehma: z.ZodType<JSONContent> = z.lazy(() =>
   z.intersection(
@@ -291,3 +290,38 @@ export async function getContractFromSlug(slug: string) {
 
   return snap.empty ? undefined : (snap.docs[0].data() as Contract)
 }
+
+async function createGroupLinks(
+  group: Group,
+  contractIds: string[],
+  userId: string
+) {
+  for (const contractId of contractIds) {
+    const contract = await getContract(contractId)
+    if (!contract?.groupSlugs?.includes(group.slug)) {
+      await firestore
+        .collection('contracts')
+        .doc(contractId)
+        .update({
+          groupSlugs: uniq([group.slug, ...(contract?.groupSlugs ?? [])]),
+        })
+    }
+    if (!contract?.groupLinks?.map((gl) => gl.groupId).includes(group.id)) {
+      await firestore
+        .collection('contracts')
+        .doc(contractId)
+        .update({
+          groupLinks: [
+            {
+              groupId: group.id,
+              name: group.name,
+              slug: group.slug,
+              userId,
+              createdTime: Date.now(),
+            } as GroupLink,
+            ...(contract?.groupLinks ?? []),
+          ],
+        })
+    }
+  }
+}
diff --git a/functions/src/on-update-group.ts b/functions/src/on-update-group.ts
index ad608cb8..7e6a5697 100644
--- a/functions/src/on-update-group.ts
+++ b/functions/src/on-update-group.ts
@@ -1,9 +1,8 @@
 import * as functions from 'firebase-functions'
 import * as admin from 'firebase-admin'
-import { Group, GroupLink } from '../../common/group'
-import { getContract, log } from './utils'
+import { Group } from '../../common/group'
+import { getContract } from './utils'
 import { uniq } from 'lodash'
-import { removeUndefinedProps } from '../../common/util/object'
 const firestore = admin.firestore()
 
 export const onUpdateGroup = functions.firestore
@@ -31,41 +30,6 @@ export const onUpdateGroup = functions.firestore
       .update({ mostRecentActivityTime: Date.now() })
   })
 
-export async function createGroupLinks(
-  group: Group,
-  contractIds: string[],
-  userId?: string
-) {
-  for (const contractId of contractIds) {
-    const contract = await getContract(contractId)
-    if (!contract?.groupSlugs?.includes(group.slug)) {
-      await firestore
-        .collection('contracts')
-        .doc(contractId)
-        .update({
-          groupSlugs: uniq([group.slug, ...(contract?.groupSlugs ?? [])]),
-        })
-    }
-    if (!contract?.groupLinks?.map((gl) => gl.groupId).includes(group.id)) {
-      await firestore
-        .collection('contracts')
-        .doc(contractId)
-        .update({
-          groupLinks: [
-            removeUndefinedProps({
-              groupId: group.id,
-              name: group.name,
-              slug: group.slug,
-              userId,
-              createdTime: Date.now(),
-            }) as GroupLink,
-            ...(contract?.groupLinks ?? []),
-          ],
-        })
-    }
-  }
-}
-
 export async function removeGroupLinks(group: Group, contractIds: string[]) {
   for (const contractId of contractIds) {
     const contract = await getContract(contractId)