diff --git a/ui/src/Components/Grid/AlertGrid/AlertGroup/Alert/AlertMenu.js b/ui/src/Components/Grid/AlertGrid/AlertGroup/Alert/AlertMenu.js
index 6e9725fa9..72c052a98 100644
--- a/ui/src/Components/Grid/AlertGrid/AlertGroup/Alert/AlertMenu.js
+++ b/ui/src/Components/Grid/AlertGrid/AlertGroup/Alert/AlertMenu.js
@@ -12,17 +12,31 @@ import { faExternalLinkAlt } from "@fortawesome/free-solid-svg-icons/faExternalL
 
 import { APIAlert, APIGroup } from "Models/API";
 import { AlertStore } from "Stores/AlertStore";
-import { SilenceFormStore, SilenceTabNames } from "Stores/SilenceFormStore";
+import {
+  SilenceFormStore,
+  SilenceTabNames,
+  AlertmanagerClustersToOption,
+} from "Stores/SilenceFormStore";
 import { FetchPauser } from "Components/FetchPauser";
 import { DropdownSlide } from "Components/Animations/DropdownSlide";
 import { DateFromNow } from "Components/DateFromNow";
 import { useOnClickOutside } from "Hooks/useOnClickOutside";
 
 const onSilenceClick = (alertStore, silenceFormStore, group, alert) => {
+  let clusters = {};
+  Object.entries(alertStore.data.clustersWithoutReadOnly).forEach(
+    ([cluster, members]) => {
+      if (alert.alertmanager.map((am) => am.cluster).includes(cluster)) {
+        clusters[cluster] = members;
+      }
+    }
+  );
+
   silenceFormStore.data.resetProgress();
   silenceFormStore.data.fillMatchersFromGroup(
     group,
     alertStore.settings.values.silenceForm.strip.labels,
+    AlertmanagerClustersToOption(clusters),
     [alert]
   );
   silenceFormStore.tab.setTab(SilenceTabNames.Editor);
diff --git a/ui/src/Components/Grid/AlertGrid/AlertGroup/Alert/AlertMenu.test.js b/ui/src/Components/Grid/AlertGrid/AlertGroup/Alert/AlertMenu.test.js
index 389b962ab..cb352762c 100644
--- a/ui/src/Components/Grid/AlertGrid/AlertGroup/Alert/AlertMenu.test.js
+++ b/ui/src/Components/Grid/AlertGrid/AlertGroup/Alert/AlertMenu.test.js
@@ -31,7 +31,7 @@ beforeEach(() => {
   group = MockAlertGroup({ alertname: "Fake Alert" }, [alert], [], {}, {});
 
   alertStore.data.upstreams = {
-    clusters: { default: ["am1"] },
+    clusters: { default: ["am1"], ro: ["ro"], am2: ["am2"] },
     instances: [
       {
         name: "am1",
@@ -45,6 +45,30 @@ beforeEach(() => {
         cluster: "default",
         clusterMembers: ["am1"],
       },
+      {
+        name: "ro",
+        uri: "http://localhost:8080",
+        publicURI: "http://example.com",
+        readonly: true,
+        headers: {},
+        corsCredentials: "include",
+        error: "",
+        version: "0.17.0",
+        cluster: "ro",
+        clusterMembers: ["ro"],
+      },
+      {
+        name: "am2",
+        uri: "http://localhost:8080",
+        publicURI: "http://example.com",
+        readonly: false,
+        headers: {},
+        corsCredentials: "include",
+        error: "",
+        version: "0.17.0",
+        cluster: "am2",
+        clusterMembers: ["am2"],
+      },
     ],
   };
 });
@@ -131,14 +155,19 @@ const MountedMenuContent = (group) => {
 
 describe("<MenuContent />", () => {
   it("clicking on 'Silence' icon opens the silence form modal", () => {
+    group.alertmanagerCount = { am1: 1, ro: 1 };
     const tree = MountedMenuContent(group);
     const button = tree.find(".dropdown-item").at(1);
     button.simulate("click");
     expect(silenceFormStore.toggle.visible).toBe(true);
+    expect(silenceFormStore.data.alertmanagers).toMatchObject([
+      { label: "am1", value: ["am1"] },
+    ]);
   });
 
   it("'Silence' menu entry is disabled when all Alertmanager instances are read-only", () => {
     alertStore.data.upstreams.instances[0].readonly = true;
+    alertStore.data.upstreams.instances[2].readonly = true;
     const tree = MountedMenuContent(group);
     const button = tree.find(".dropdown-item").at(1);
     expect(button.hasClass("disabled")).toBe(true);
diff --git a/ui/src/Components/Grid/AlertGrid/AlertGroup/GroupHeader/GroupMenu.js b/ui/src/Components/Grid/AlertGrid/AlertGroup/GroupHeader/GroupMenu.js
index 8808d6fd6..bd31a3d18 100644
--- a/ui/src/Components/Grid/AlertGrid/AlertGroup/GroupHeader/GroupMenu.js
+++ b/ui/src/Components/Grid/AlertGrid/AlertGroup/GroupHeader/GroupMenu.js
@@ -13,17 +13,33 @@ import { faBellSlash } from "@fortawesome/free-solid-svg-icons/faBellSlash";
 import { APIGroup } from "Models/API";
 import { FormatAlertsQ } from "Stores/AlertStore";
 import { AlertStore } from "Stores/AlertStore";
-import { SilenceFormStore, SilenceTabNames } from "Stores/SilenceFormStore";
+import {
+  SilenceFormStore,
+  SilenceTabNames,
+  AlertmanagerClustersToOption,
+} from "Stores/SilenceFormStore";
 import { QueryOperators, StaticLabels, FormatQuery } from "Common/Query";
 import { DropdownSlide } from "Components/Animations/DropdownSlide";
 import { FetchPauser } from "Components/FetchPauser";
 import { useOnClickOutside } from "Hooks/useOnClickOutside";
 
 const onSilenceClick = (alertStore, silenceFormStore, group) => {
+  let clusters = {};
+  Object.entries(alertStore.data.clustersWithoutReadOnly).forEach(
+    ([cluster, members]) => {
+      members.forEach((member) => {
+        if (Object.keys(group.alertmanagerCount).includes(member)) {
+          clusters[cluster] = members;
+        }
+      });
+    }
+  );
+
   silenceFormStore.data.resetProgress();
   silenceFormStore.data.fillMatchersFromGroup(
     group,
-    alertStore.settings.values.silenceForm.strip.labels
+    alertStore.settings.values.silenceForm.strip.labels,
+    AlertmanagerClustersToOption(clusters)
   );
   silenceFormStore.tab.setTab(SilenceTabNames.Editor);
   silenceFormStore.toggle.show();
diff --git a/ui/src/Components/Grid/AlertGrid/AlertGroup/GroupHeader/GroupMenu.test.js b/ui/src/Components/Grid/AlertGrid/AlertGroup/GroupHeader/GroupMenu.test.js
index 6c6635b27..07ffa9b90 100644
--- a/ui/src/Components/Grid/AlertGrid/AlertGroup/GroupHeader/GroupMenu.test.js
+++ b/ui/src/Components/Grid/AlertGrid/AlertGroup/GroupHeader/GroupMenu.test.js
@@ -29,7 +29,7 @@ beforeEach(() => {
   MockSetIsMenuOpen = jest.fn();
 
   alertStore.data.upstreams = {
-    clusters: { default: ["am1"] },
+    clusters: { default: ["am1"], ro: ["ro"], am2: ["am2"] },
     instances: [
       {
         name: "am1",
@@ -43,6 +43,30 @@ beforeEach(() => {
         cluster: "default",
         clusterMembers: ["am1"],
       },
+      {
+        name: "ro",
+        uri: "http://localhost:8080",
+        publicURI: "http://example.com",
+        readonly: true,
+        headers: {},
+        corsCredentials: "include",
+        error: "",
+        version: "0.17.0",
+        cluster: "ro",
+        clusterMembers: ["ro"],
+      },
+      {
+        name: "am2",
+        uri: "http://localhost:8080",
+        publicURI: "http://example.com",
+        readonly: false,
+        headers: {},
+        corsCredentials: "include",
+        error: "",
+        version: "0.17.0",
+        cluster: "am2",
+        clusterMembers: ["am2"],
+      },
     ],
   };
 });
@@ -141,14 +165,19 @@ describe("<MenuContent />", () => {
 
   it("clicking on 'Silence' icon opens the silence form modal", () => {
     const group = MockAlertGroup({ alertname: "Fake Alert" }, [], [], {}, {});
+    group.alertmanagerCount = { am1: 1, ro: 1 };
     const tree = MountedMenuContent(group);
     const button = tree.find(".dropdown-item").at(1);
     button.simulate("click");
     expect(silenceFormStore.toggle.visible).toBe(true);
+    expect(silenceFormStore.data.alertmanagers).toMatchObject([
+      { label: "am1", value: ["am1"] },
+    ]);
   });
 
   it("'Silence' menu entry is disabled when all Alertmanager instances are read-only", () => {
     alertStore.data.upstreams.instances[0].readonly = true;
+    alertStore.data.upstreams.instances[2].readonly = true;
 
     const group = MockAlertGroup({ alertname: "Fake Alert" }, [], [], {}, {});
     const tree = MountedMenuContent(group);
diff --git a/ui/src/Stores/SilenceFormStore.js b/ui/src/Stores/SilenceFormStore.js
index edb05ac80..980234ec6 100644
--- a/ui/src/Stores/SilenceFormStore.js
+++ b/ui/src/Stores/SilenceFormStore.js
@@ -316,13 +316,17 @@ class SilenceFormStore {
       },
 
       // if alerts argument is not passed all group alerts will be used
-      fillMatchersFromGroup(group, stripLabels, alerts) {
+      fillMatchersFromGroup(group, stripLabels, alertmanagers, alerts) {
+        this.alertmanagers = alertmanagers;
+
         this.matchers = MatchersFromGroup(group, stripLabels, alerts);
         // ensure that silenceID is nulled, since it's used to edit silences
         // and this is used to silence groups
         this.silenceID = null;
         // disable matcher autofill
         this.autofillMatchers = false;
+        // disable alertmanager input reset
+        this.resetInputs = false;
       },
 
       fillFormFromSilence(alertmanager, silence) {
diff --git a/ui/src/Stores/SilenceFormStore.test.js b/ui/src/Stores/SilenceFormStore.test.js
index f3a431272..e61ef823e 100644
--- a/ui/src/Stores/SilenceFormStore.test.js
+++ b/ui/src/Stores/SilenceFormStore.test.js
@@ -16,6 +16,7 @@ import {
   NewEmptyMatcher,
   SilenceTabNames,
   MatcherValueToObject,
+  AlertmanagerClustersToOption,
 } from "./SilenceFormStore";
 
 let store;
@@ -126,7 +127,14 @@ describe("SilenceFormStore.data", () => {
 
   it("fillMatchersFromGroup() creates correct matcher object for a group", () => {
     const group = MockGroup();
-    store.data.fillMatchersFromGroup(group, []);
+    store.data.fillMatchersFromGroup(
+      group,
+      [],
+      AlertmanagerClustersToOption({ ha: ["am1", "am2"] })
+    );
+    expect(store.data.alertmanagers).toMatchObject([
+      { label: "Cluster: ha", value: ["am1", "am2"] },
+    ]);
     expect(store.data.matchers).toHaveLength(4);
     expect(store.data.matchers).toContainEqual(
       expect.objectContaining({
@@ -167,7 +175,15 @@ describe("SilenceFormStore.data", () => {
 
   it("fillMatchersFromGroup() creates correct matcher object for a group with only a subset of alerts passed", () => {
     const group = MockGroup();
-    store.data.fillMatchersFromGroup(group, [], [group.alerts[0]]);
+    store.data.fillMatchersFromGroup(
+      group,
+      [],
+      AlertmanagerClustersToOption({ ha: ["am1", "am2"] }),
+      [group.alerts[0]]
+    );
+    expect(store.data.alertmanagers).toMatchObject([
+      { label: "Cluster: ha", value: ["am1", "am2"] },
+    ]);
     expect(store.data.matchers).toHaveLength(4);
     expect(store.data.matchers).toContainEqual(
       expect.objectContaining({