diff --git a/src/actions/sponsor-actions.js b/src/actions/sponsor-actions.js
index 94c116f0c..30f56a6af 100644
--- a/src/actions/sponsor-actions.js
+++ b/src/actions/sponsor-actions.js
@@ -29,7 +29,7 @@ import {
   fetchErrorHandler,
   postFile
 } from "openstack-uicore-foundation/lib/utils/actions";
-import debounce from "lodash/debounce"
+import debounce from "lodash/debounce";
 import URI from "urijs";
 import { getAccessTokenSafely } from "../utils/methods";
 import { normalizeLeadReportSettings } from "../models/lead-report-settings";
@@ -64,10 +64,6 @@ export const SPONSOR_TIER_DELETED = "SPONSOR_TIER_DELETED";
 export const REQUEST_SPONSOR_SPONSORSHIPS = "REQUEST_SPONSOR_SPONSORSHIPS";
 export const RECEIVE_SPONSOR_SPONSORSHIPS = "RECEIVE_SPONSOR_SPONSORSHIPS";
 export const SET_SELECTED_SPONSORSHIP = "SET_SELECTED_SPONSORSHIP";
-export const REQUEST_SPONSOR_SPONSORSHIPS_ADDONS =
-  "REQUEST_SPONSOR_SPONSORSHIPS_ADDONS";
-export const RECEIVE_SPONSOR_SPONSORSHIPS_ADDONS =
-  "RECEIVE_SPONSOR_SPONSORSHIPS_ADDONS";
 export const SPONSOR_SPONSORSHIPS_ADDON_ADDED =
   "SPONSOR_SPONSORSHIPS_ADDON_ADDED";
 export const SPONSOR_SPONSORSHIPS_ADDON_UPDATED =
@@ -356,7 +352,7 @@ export const addSponsorToSummit = (entity) => async (dispatch, getState) => {
     .finally(() => dispatch(stopLoading()));
 };
 
-export const getSponsorTiers =
+export const getSponsorSponsorships =
   (
     sponsorId,
     currentPage = DEFAULT_CURRENT_PAGE,
@@ -483,30 +479,6 @@ const normalizeTiersForSponsor = (entity) => {
   return normalizedEntity;
 };
 
-export const getSponsorshipAddons = (sponsorshipId) => async (dispatch) => {
-  const { currentSummitState } = getState();
-  const accessToken = await getAccessTokenSafely();
-  const { currentSummit } = currentSummitState;
-  const {
-    entity: { id: sponsorId }
-  } = currentSponsorState;
-
-  const params = {
-    access_token: accessToken
-  };
-
-  dispatch(startLoading());
-
-  return getRequest(
-    createAction(REQUEST_SPONSOR_SPONSORSHIPS_ADDONS),
-    createAction(RECEIVE_SPONSOR_SPONSORSHIPS_ADDONS),
-    `${window.API_BASE_URL}/api/v1/summits/${currentSummit.id}/sponsors/${sponsorId}/sponsorships/${sponsorshipId}/addons`,
-    authErrorHandler
-  )(params)(dispatch).then(() => {
-    dispatch(stopLoading());
-  });
-};
-
 export const setSelectedSponsorship = (sponsorship) => (dispatch) => {
   dispatch(createAction(SET_SELECTED_SPONSORSHIP)({ sponsorship }));
 };
diff --git a/src/actions/sponsor-forms-actions.js b/src/actions/sponsor-forms-actions.js
index 2df0b36a6..53a8e7eb5 100644
--- a/src/actions/sponsor-forms-actions.js
+++ b/src/actions/sponsor-forms-actions.js
@@ -637,8 +637,11 @@ const normalizeSponsorManagedForm = (entity) => {
 };
 
 export const getSponsorManagedForm = (formId) => async (dispatch, getState) => {
-  const { currentSummitState } = getState();
+  const { currentSummitState, currentSponsorState } = getState();
   const { currentSummit } = currentSummitState;
+  const {
+    entity: { id: sponsorId }
+  } = currentSponsorState;
   const accessToken = await getAccessTokenSafely();
 
   dispatch(startLoading());
@@ -654,7 +657,7 @@ export const getSponsorManagedForm = (formId) => async (dispatch, getState) => {
   return getRequest(
     null,
     createAction(RECEIVE_SPONSOR_CUSTOMIZED_FORM),
-    `${window.PURCHASES_API_URL}/api/v1/summits/${currentSummit.id}/show-forms/${formId}`,
+    `${window.PURCHASES_API_URL}/api/v1/summits/${currentSummit.id}/sponsors/${sponsorId}/managed-forms/${formId}`,
     snackbarErrorHandler
   )(params)(dispatch).then(() => {
     dispatch(stopLoading());
diff --git a/src/pages/sponsors/__tests__/edit-sponsor-page.test.js b/src/pages/sponsors/__tests__/edit-sponsor-page.test.js
index 4bec7b1c6..48af66530 100644
--- a/src/pages/sponsors/__tests__/edit-sponsor-page.test.js
+++ b/src/pages/sponsors/__tests__/edit-sponsor-page.test.js
@@ -23,7 +23,7 @@ jest.mock("../../../actions/sponsor-actions", () => ({
   getSponsorMaterials: jest.fn(() => ({ type: "MOCK_ACTION" })),
   getSponsorSocialNetworks: jest.fn(() => ({ type: "MOCK_ACTION" })),
   getSponsorLeadReportSettingsMeta: jest.fn(() => ({ type: "MOCK_ACTION" })),
-  getSponsorTiers: jest.fn(() => ({ type: "MOCK_ACTION" })),
+  getSponsorSponsorships: jest.fn(() => ({ type: "MOCK_ACTION" })),
   getExtraQuestionMeta: jest.fn(() => ({ type: "MOCK_ACTION" })),
   resetSponsorForm: jest.fn(() => ({ type: "MOCK_ACTION" }))
 }));
diff --git a/src/pages/sponsors/sponsor-page/index.js b/src/pages/sponsors/sponsor-page/index.js
index ea3c6f03e..b1e93748c 100644
--- a/src/pages/sponsors/sponsor-page/index.js
+++ b/src/pages/sponsors/sponsor-page/index.js
@@ -21,7 +21,7 @@ import {
   getSponsorLeadReportSettingsMeta,
   getSponsorMaterials,
   getSponsorSocialNetworks,
-  getSponsorTiers,
+  getSponsorSponsorships,
   resetSponsorForm
 } from "../../../actions/sponsor-actions";
 import { getSponsorPurchasesMeta } from "../../../actions/sponsor-settings-actions";
@@ -39,7 +39,7 @@ const SponsorPage = ({
   getSponsorMaterials,
   getSponsorSocialNetworks,
   getSponsorLeadReportSettingsMeta,
-  getSponsorTiers,
+  getSponsorSponsorships,
   getExtraQuestionMeta,
   getSponsorPurchasesMeta
 }) => {
@@ -49,7 +49,7 @@ const SponsorPage = ({
       getSponsorMaterials(entity.id);
       getSponsorSocialNetworks(entity.id);
       getSponsorLeadReportSettingsMeta(entity.id);
-      getSponsorTiers(entity.id);
+      getSponsorSponsorships(entity.id);
       getExtraQuestionMeta();
       getSponsorPurchasesMeta();
     } else {
@@ -103,7 +103,7 @@ export default connect(mapStateToProps, {
   getSponsorMaterials,
   getSponsorSocialNetworks,
   getSponsorLeadReportSettingsMeta,
-  getSponsorTiers,
+  getSponsorSponsorships,
   getExtraQuestionMeta,
   getSponsorPurchasesMeta
 })(SponsorPage);
diff --git a/src/pages/sponsors/sponsor-page/tabs/sponsor-forms-tab/components/customized-form/__tests__/customized-form-popup.test.js b/src/pages/sponsors/sponsor-page/tabs/sponsor-forms-tab/components/customized-form/__tests__/customized-form-popup.test.js
index 5afdce9d6..036ca9781 100644
--- a/src/pages/sponsors/sponsor-page/tabs/sponsor-forms-tab/components/customized-form/__tests__/customized-form-popup.test.js
+++ b/src/pages/sponsors/sponsor-page/tabs/sponsor-forms-tab/components/customized-form/__tests__/customized-form-popup.test.js
@@ -18,15 +18,24 @@ jest.mock("actions/sponsor-forms-actions", () => ({
 
 jest.mock("../customized-form", () => ({
   __esModule: true,
-  default: ({ onSubmit, isSaving }) => (
-    <button
-      type="button"
-      disabled={isSaving}
-      onClick={() => onSubmit({ code: "111" })}
-    >
-      submit-customized-form
-    </button>
-  )
+  default: ({ onSubmit, isSaving, sponsor, summitId }) => {
+    const sponsorshipIds = (sponsor?.sponsorships || []).map((s) => s.id);
+    return (
+      <>
+        <button
+          type="button"
+          disabled={isSaving}
+          onClick={() => onSubmit({ code: "111" })}
+        >
+          submit-customized-form
+        </button>
+        <span
+          data-testid="addon-query-params"
+          data-params={JSON.stringify([summitId, sponsor?.id, sponsorshipIds])}
+        />
+      </>
+    );
+  }
 }));
 
 describe("CustomizedFormPopup", () => {
@@ -41,17 +50,34 @@ describe("CustomizedFormPopup", () => {
     }
   };
 
-  const sponsor = {
+  const createSponsor = (overrides = {}) => ({
     id: 1,
-    sponsorships_collection: {
-      sponsorships: []
-    }
-  };
+    sponsorships: [{ id: 42 }],
+    ...overrides
+  });
+
+  const sponsor = createSponsor();
 
   beforeEach(() => {
     jest.clearAllMocks();
   });
 
+  it("passes sponsorship ids and summitId to the form as queryParams", () => {
+    renderWithRedux(
+      <CustomizedFormPopup
+        formId={null}
+        open
+        onClose={jest.fn()}
+        sponsor={createSponsor({ sponsorships: [{ id: 42 }, { id: 99 }] })}
+        summitId={69}
+      />,
+      { initialState }
+    );
+
+    const el = screen.getByTestId("addon-query-params");
+    expect(JSON.parse(el.dataset.params)).toEqual([69, 1, [42, 99]]);
+  });
+
   it("keeps modal open when save fails", async () => {
     const onClose = jest.fn();
     const onSaved = jest.fn();
diff --git a/src/pages/sponsors/sponsor-page/tabs/sponsor-forms-tab/components/customized-form/customized-form.js b/src/pages/sponsors/sponsor-page/tabs/sponsor-forms-tab/components/customized-form/customized-form.js
index a793c2bfd..a1530e1c0 100644
--- a/src/pages/sponsors/sponsor-page/tabs/sponsor-forms-tab/components/customized-form/customized-form.js
+++ b/src/pages/sponsors/sponsor-page/tabs/sponsor-forms-tab/components/customized-form/customized-form.js
@@ -54,9 +54,7 @@ const CustomizedForm = ({
   isSaving = false,
   onSubmit
 }) => {
-  const sponsorships = sponsor.sponsorships_collection.sponsorships.map(
-    (e) => e.id
-  );
+  const sponsorshipIds = sponsor.sponsorships?.map((e) => e.id) || [];
 
   const formik = useFormik(
     {
@@ -126,7 +124,7 @@ const CustomizedForm = ({
                 name="allowed_add_ons"
                 queryFunction={querySponsorAddons}
                 // params for function, except input
-                queryParams={[summitId, sponsor.id, sponsorships]}
+                queryParams={[summitId, sponsor.id, sponsorshipIds]}
                 showSelectAll
                 getGroupId={(addon) => addon.sponsorship.type.id}
                 getGroupLabel={(addon) => addon.sponsorship.type.type.name}
diff --git a/src/pages/sponsors/sponsor-page/tabs/sponsor-general-form/index.js b/src/pages/sponsors/sponsor-page/tabs/sponsor-general-form/index.js
index dea556c59..ee86dd44f 100644
--- a/src/pages/sponsors/sponsor-page/tabs/sponsor-general-form/index.js
+++ b/src/pages/sponsors/sponsor-page/tabs/sponsor-general-form/index.js
@@ -23,8 +23,7 @@ import {
   deleteExtraQuestion,
   getSponsorExtraQuestion,
   getSponsorLeadReportSettingsMeta,
-  getSponsorshipAddons,
-  getSponsorTiers,
+  getSponsorSponsorships,
   removeAddonToSponsorship,
   removeTierFromSponsor,
   resetSponsorExtraQuestionForm,
@@ -40,10 +39,9 @@ const SponsorGeneralForm = ({
   sponsor,
   member,
   currentSummit,
-  getSponsorTiers,
+  getSponsorSponsorships,
   addTierToSponsor,
   removeTierFromSponsor,
-  getSponsorshipAddons,
   setSelectedSponsorship,
   saveAddonsToSponsorship,
   removeAddonToSponsorship,
@@ -57,7 +55,7 @@ const SponsorGeneralForm = ({
   updateExtraQuestionOrder
 }) => {
   const handleSponsorshipPaginate = (page, perPage, order, orderDir) => {
-    getSponsorTiers(sponsor.id, page, perPage, order, orderDir);
+    getSponsorSponsorships(sponsor.id, page, perPage, order, orderDir);
   };
 
   return (
@@ -70,7 +68,6 @@ const SponsorGeneralForm = ({
         onSponsorshipPaginate={handleSponsorshipPaginate}
         onSponsorshipAdd={addTierToSponsor}
         onSponsorshipDelete={removeTierFromSponsor}
-        getSponsorshipAddons={getSponsorshipAddons}
         onSponsorshipSelect={setSelectedSponsorship}
         onSponsorshipAddonSave={saveAddonsToSponsorship}
         onSponsorshipAddonRemove={removeAddonToSponsorship}
@@ -108,10 +105,9 @@ const mapStateToProps = ({
 
 export default connect(mapStateToProps, {
   getSponsorLeadReportSettingsMeta,
-  getSponsorTiers,
+  getSponsorSponsorships,
   addTierToSponsor,
   removeTierFromSponsor,
-  getSponsorshipAddons,
   saveAddonsToSponsorship,
   removeAddonToSponsorship,
   setSelectedSponsorship,
diff --git a/src/pages/sponsors/sponsor-page/tabs/sponsor-general-form/sponsorship.js b/src/pages/sponsors/sponsor-page/tabs/sponsor-general-form/sponsorship.js
index c8eca25f8..2b3ccbd75 100644
--- a/src/pages/sponsors/sponsor-page/tabs/sponsor-general-form/sponsorship.js
+++ b/src/pages/sponsors/sponsor-page/tabs/sponsor-general-form/sponsorship.js
@@ -28,7 +28,6 @@ const Sponsorship = ({
   onSponsorshipPaginate,
   onSponsorshipAdd,
   onSponsorshipDelete,
-  getSponsorshipAddons,
   onSponsorshipSelect,
   onSponsorshipAddonSave,
   onSponsorshipAddonRemove
@@ -186,7 +185,6 @@ const Sponsorship = ({
           sponsorship={selectedSponsorship}
           summitId={summitId}
           open={showManageTierAddonsPopup}
-          getSponsorshipAddons={getSponsorshipAddons}
           onSponsorshipAddonRemove={onSponsorshipAddonRemove}
           onClose={handleCloseManageAddonsPopup}
           onSubmit={handleAddSponsorshipAddon}
diff --git a/src/pages/sponsors/sponsor-page/tabs/sponsor-pages-tab/__tests__/sponsor-pages-tab.test.js b/src/pages/sponsors/sponsor-page/tabs/sponsor-pages-tab/__tests__/sponsor-pages-tab.test.js
index e327132cd..287193861 100644
--- a/src/pages/sponsors/sponsor-page/tabs/sponsor-pages-tab/__tests__/sponsor-pages-tab.test.js
+++ b/src/pages/sponsors/sponsor-page/tabs/sponsor-pages-tab/__tests__/sponsor-pages-tab.test.js
@@ -73,7 +73,7 @@ jest.mock("../../../../../../actions/summit-actions", () => ({
 
 const createSponsor = (overrides = {}) => ({
   id: 1,
-  sponsorships_collection: { sponsorships: [] },
+  sponsorships: [],
   ...overrides
 });
 
@@ -125,7 +125,7 @@ const defaultState = {
     }
   },
   currentSponsorState: {
-    entity: { id: 1, sponsorships_collection: { sponsorships: [] } },
+    entity: { id: 1, sponsorships: [] },
     errors: {}
   }
 };
diff --git a/src/pages/sponsors/sponsor-page/tabs/sponsor-pages-tab/index.js b/src/pages/sponsors/sponsor-page/tabs/sponsor-pages-tab/index.js
index cec79b3ff..2c5e82b44 100644
--- a/src/pages/sponsors/sponsor-page/tabs/sponsor-pages-tab/index.js
+++ b/src/pages/sponsors/sponsor-page/tabs/sponsor-pages-tab/index.js
@@ -381,9 +381,7 @@ const SponsorPagesTab = ({
     )
   ];
 
-  const sponsorshipIds = sponsor.sponsorships_collection.sponsorships.map(
-    (e) => e.id
-  );
+  const sponsorshipIds = sponsor.sponsorships?.map((e) => e.id) || [];
 
   return (
     <Box sx={{ mt: 2 }}>
diff --git a/src/reducers/sponsors/sponsor-reducer.js b/src/reducers/sponsors/sponsor-reducer.js
index 142bca97e..9736a35db 100644
--- a/src/reducers/sponsors/sponsor-reducer.js
+++ b/src/reducers/sponsors/sponsor-reducer.js
@@ -129,6 +129,7 @@ export const DEFAULT_ENTITY = {
   extra_questions: [],
   lead_report_setting: {},
   available_lead_report_columns: [],
+  sponsorships: [],
   sponsorships_collection: DEFAULT_SPONSORHIPS_STATE
 };
 
@@ -163,6 +164,10 @@ const sponsorReducer = (state = DEFAULT_STATE, action) => {
         }
       }
 
+      if (!Array.isArray(entity.sponsorships)) {
+        entity.sponsorships = [];
+      }
+
       if (!entity.lead_report_setting) entity.lead_report_setting = {};
 
       return {