diff --git a/pkg/services/ngalert/CHANGELOG.md b/pkg/services/ngalert/CHANGELOG.md
index 83c5c9dd0d5..aa88a962395 100644
--- a/pkg/services/ngalert/CHANGELOG.md
+++ b/pkg/services/ngalert/CHANGELOG.md
@@ -45,6 +45,14 @@ Scopes must have an order to ensure consistency and ease of search, this helps u
 
 ## Grafana Alerting - main / unreleased
 
+- [CHANGE] Rule API to reject request to update rules that affects provisioned rules #50835
+- [FEATURE] Add first Grafana reserved label, grafana_folder is created during runtime and stores an alert's folder/namespace title #50262
+- [FEATURE] use optimistic lock by version field when updating alert rules #50274
+- [BUGFIX] State manager to use tick time to determine stale states #50991
+- [ENHANCEMENT] Scheduler: Drop ticks if rule evaluation is too slow and adds a metric grafana_alerting_schedule_rule_evaluations_missed_total to track missed evaluations per rule #48885
+- [ENHANCEMENT] Ticker to tick at predictable time #50197
+- [ENHANCEMENT] Migration: Don't stop the migration when failing to parse alert rule tags #51253
+
 ## 9.0.0
 
 - [ENHANCEMENT] Scheduler: Ticker expose new metrics. In legacy, metrics are prefixed with `legacy_` #47828, #48190
diff --git a/pkg/services/sqlstore/migrations/ualert/alert_rule.go b/pkg/services/sqlstore/migrations/ualert/alert_rule.go
index cefa976130a..a0471c5ca6e 100644
--- a/pkg/services/sqlstore/migrations/ualert/alert_rule.go
+++ b/pkg/services/sqlstore/migrations/ualert/alert_rule.go
@@ -5,6 +5,7 @@ import (
 	"fmt"
 	"time"
 
+	"github.com/grafana/grafana/pkg/components/simplejson"
 	"github.com/grafana/grafana/pkg/expr"
 	legacymodels "github.com/grafana/grafana/pkg/models"
 	ngmodels "github.com/grafana/grafana/pkg/services/ngalert/models"
@@ -77,9 +78,11 @@ func (a *alertRule) makeVersion() *alertRuleVersion {
 }
 
 func addMigrationInfo(da *dashAlert) (map[string]string, map[string]string) {
-	lbls := da.ParsedSettings.AlertRuleTags
-	if lbls == nil {
-		lbls = make(map[string]string)
+	tagsMap := simplejson.NewFromAny(da.ParsedSettings.AlertRuleTags).MustMap()
+	lbls := make(map[string]string, len(tagsMap))
+
+	for k, v := range tagsMap {
+		lbls[k] = simplejson.NewFromAny(v).MustString()
 	}
 
 	annotations := make(map[string]string, 3)
diff --git a/pkg/services/sqlstore/migrations/ualert/alert_rule_test.go b/pkg/services/sqlstore/migrations/ualert/alert_rule_test.go
index b3d16922a1e..c8d8c195fc2 100644
--- a/pkg/services/sqlstore/migrations/ualert/alert_rule_test.go
+++ b/pkg/services/sqlstore/migrations/ualert/alert_rule_test.go
@@ -1,6 +1,7 @@
 package ualert
 
 import (
+	"encoding/json"
 	"testing"
 
 	"github.com/grafana/grafana/pkg/components/simplejson"
@@ -50,3 +51,36 @@ func TestMigrateAlertRuleQueries(t *testing.T) {
 		})
 	}
 }
+
+func TestAddMigrationInfo(t *testing.T) {
+	tt := []struct {
+		name                string
+		tagsJSON            string
+		expectedLabels      map[string]string
+		expectedAnnotations map[string]string
+	}{
+		{
+			name:                "when alert rule tags are a JSON array, they're ignored.",
+			tagsJSON:            `{ "alertRuleTags": ["one", "two", "three", "four"] }`,
+			expectedLabels:      map[string]string{},
+			expectedAnnotations: map[string]string{"__alertId__": "0", "__dashboardUid__": "", "__panelId__": "0"},
+		},
+		{
+			name:                "when alert rule tags are a JSON object",
+			tagsJSON:            `{ "alertRuleTags": { "key": "value", "key2": "value2" } }`,
+			expectedLabels:      map[string]string{"key": "value", "key2": "value2"},
+			expectedAnnotations: map[string]string{"__alertId__": "0", "__dashboardUid__": "", "__panelId__": "0"},
+		},
+	}
+
+	for _, tc := range tt {
+		t.Run(tc.name, func(t *testing.T) {
+			var settings dashAlertSettings
+			require.NoError(t, json.Unmarshal([]byte(tc.tagsJSON), &settings))
+
+			labels, annotations := addMigrationInfo(&dashAlert{ParsedSettings: &settings})
+			require.Equal(t, tc.expectedLabels, labels)
+			require.Equal(t, tc.expectedAnnotations, annotations)
+		})
+	}
+}
diff --git a/pkg/services/sqlstore/migrations/ualert/dash_alert.go b/pkg/services/sqlstore/migrations/ualert/dash_alert.go
index f527744b31c..f6276507e33 100644
--- a/pkg/services/sqlstore/migrations/ualert/dash_alert.go
+++ b/pkg/services/sqlstore/migrations/ualert/dash_alert.go
@@ -40,7 +40,7 @@ WHERE org_id IN (SELECT id from org)
 	AND dashboard_id IN (SELECT id from dashboard)
 `
 
-// slurpDashAlerts loads all alerts from the alert database table into the
+// slurpDashAlerts loads all alerts from the alert database table into
 // the dashAlert type. If there are alerts that belong to either organization or dashboard that does not exist, those alerts will not be returned/
 // Additionally it unmarshals the json settings for the alert into the
 // ParsedSettings property of the dash alert.
@@ -68,7 +68,7 @@ type dashAlertSettings struct {
 	NoDataState         string               `json:"noDataState"`
 	ExecutionErrorState string               `json:"executionErrorState"`
 	Conditions          []dashAlertCondition `json:"conditions"`
-	AlertRuleTags       map[string]string    `json:"alertRuleTags"`
+	AlertRuleTags       interface{}          `json:"alertRuleTags"`
 	Notifications       []dashAlertNot       `json:"notifications"`
 }