diff --git a/src/NRedisStack/TimeSeries/TimeSeriesAux.cs b/src/NRedisStack/TimeSeries/TimeSeriesAux.cs
index 2cf7bb28..65ad7c94 100644
--- a/src/NRedisStack/TimeSeries/TimeSeriesAux.cs
+++ b/src/NRedisStack/TimeSeries/TimeSeriesAux.cs
@@ -300,10 +300,9 @@ public static List<object> BuildRangeArgs(string key,
                                                   TsBucketTimestamps? bt,
                                                   bool empty)
         {
-            var args = new List<object>()
-                {key, fromTimeStamp.Value, toTimeStamp.Value};
+            var args = new List<object>() { key, fromTimeStamp.Value, toTimeStamp.Value };
             args.AddLatest(latest);
-            if (filterByTs != null) args.AddFilterByTs(filterByTs);
+            args.AddFilterByTs(filterByTs);
             args.AddFilterByValue(filterByValue);
             args.AddCount(count);
             args.AddAggregation(align, aggregation, timeBucket, bt, empty);
@@ -328,6 +327,7 @@ public static List<object> BuildMultiRangeArgs(TimeStamp fromTimeStamp,
                                                        (string, TsReduce)? groupbyTuple)
         {
             var args = new List<object>() { fromTimeStamp.Value, toTimeStamp.Value };
+            args.AddLatest(latest);
             args.AddFilterByTs(filterByTs);
             args.AddFilterByValue(filterByValue);
             args.AddWithLabels(withLabels, selectLabels);
@@ -338,4 +338,4 @@ public static List<object> BuildMultiRangeArgs(TimeStamp fromTimeStamp,
             return args;
         }
     }
-}
\ No newline at end of file
+}
diff --git a/tests/NRedisStack.Tests/TimeSeries/TestAPI/TestMRange.cs b/tests/NRedisStack.Tests/TimeSeries/TestAPI/TestMRange.cs
index cbec11ba..34b9ee38 100644
--- a/tests/NRedisStack.Tests/TimeSeries/TestAPI/TestMRange.cs
+++ b/tests/NRedisStack.Tests/TimeSeries/TestAPI/TestMRange.cs
@@ -8,12 +8,13 @@ namespace NRedisStack.Tests.TimeSeries.TestAPI
 {
     public class TestMRange : AbstractNRedisStackTest, IDisposable
     {
-        private readonly string[] keys = { "MRANGE_TESTS_1", "MRANGE_TESTS_2" };
+        private readonly string[] _keys = { "MRANGE_TESTS_1", "MRANGE_TESTS_2" };
 
         public TestMRange(RedisFixture redisFixture) : base(redisFixture) { }
 
-        private List<TimeSeriesTuple> CreateData(ITimeSeriesCommands ts, int timeBucket)
+        private List<TimeSeriesTuple> CreateData(ITimeSeriesCommands ts, int timeBucket, string[]? keys = null)
         {
+            keys ??= _keys;
             var tuples = new List<TimeSeriesTuple>();
 
             for (int i = 0; i < 10; i++)
@@ -36,17 +37,17 @@ public void TestSimpleMRange()
             var ts = db.TS();
             TimeSeriesLabel label = new TimeSeriesLabel("MRANGEkey", "MRANGEvalue");
             var labels = new List<TimeSeriesLabel> { label };
-            foreach (string key in keys)
+            foreach (string key in _keys)
             {
                 ts.Create(key, labels: labels);
             }
 
             var tuples = CreateData(ts, 50);
             var results = ts.MRange("-", "+", new List<string> { "MRANGEkey=MRANGEvalue" });
-            Assert.Equal(keys.Length, results.Count);
+            Assert.Equal(_keys.Length, results.Count);
             for (int i = 0; i < results.Count; i++)
             {
-                Assert.Equal(keys[i], results[i].key);
+                Assert.Equal(_keys[i], results[i].key);
                 Assert.Equal(0, results[i].labels.Count);
                 Assert.Equal(tuples, results[i].values);
             }
@@ -59,17 +60,17 @@ public void TestMRangeWithLabels()
             var ts = db.TS();
             TimeSeriesLabel label = new TimeSeriesLabel("key", "MRangeWithLabels");
             var labels = new List<TimeSeriesLabel> { label };
-            foreach (string key in keys)
+            foreach (string key in _keys)
             {
                 ts.Create(key, labels: labels);
             }
 
             var tuples = CreateData(ts, 50);
             var results = ts.MRange("-", "+", new List<string> { "key=MRangeWithLabels" }, withLabels: true);
-            Assert.Equal(keys.Length, results.Count);
+            Assert.Equal(_keys.Length, results.Count);
             for (int i = 0; i < results.Count; i++)
             {
-                Assert.Equal(keys[i], results[i].key);
+                Assert.Equal(_keys[i], results[i].key);
                 Assert.Equal(labels, results[i].labels);
                 Assert.Equal(tuples, results[i].values);
             }
@@ -83,9 +84,9 @@ public void TestMRangeSelectLabels()
             var ts = db.TS();
             TimeSeriesLabel label1 = new TimeSeriesLabel("key", "MRangeSelectLabels");
             TimeSeriesLabel[] labels = new TimeSeriesLabel[] { new TimeSeriesLabel("team", "CTO"), new TimeSeriesLabel("team", "AUT") };
-            for (int i = 0; i < keys.Length; i++)
+            for (int i = 0; i < _keys.Length; i++)
             {
-                ts.Create(keys[i], labels: new List<TimeSeriesLabel> { label1, labels[i] });
+                ts.Create(_keys[i], labels: new List<TimeSeriesLabel> { label1, labels[i] });
             }
 
             var tuples = CreateData(ts, 50);
@@ -95,10 +96,10 @@ public void TestMRangeSelectLabels()
             Assert.Equal("withLabels and selectLabels cannot be specified together.", ex.Message);
 
             var results = ts.MRange("-", "+", new List<string> { "key=MRangeSelectLabels" }, selectLabels: new List<string> { "team" });
-            Assert.Equal(keys.Length, results.Count);
+            Assert.Equal(_keys.Length, results.Count);
             for (int i = 0; i < results.Count; i++)
             {
-                Assert.Equal(keys[i], results[i].key);
+                Assert.Equal(_keys[i], results[i].key);
                 Assert.Equal(labels[i], results[i].labels[0]);
                 Assert.Equal(tuples, results[i].values);
             }
@@ -112,11 +113,11 @@ public void TestMRangeFilter()
             var ts = db.TS();
             TimeSeriesLabel label = new TimeSeriesLabel("key", "MRangeFilter");
             var labels = new List<TimeSeriesLabel> { label };
-            ts.Create(keys[0], labels: labels);
+            ts.Create(_keys[0], labels: labels);
             var tuples = CreateData(ts, 50);
             var results = ts.MRange("-", "+", new List<string> { "key=MRangeFilter" });
             Assert.Equal(1, results.Count);
-            Assert.Equal(keys[0], results[0].key);
+            Assert.Equal(_keys[0], results[0].key);
             Assert.Equal(0, results[0].labels.Count);
             Assert.Equal(tuples, results[0].values);
         }
@@ -129,7 +130,7 @@ public void TestMRangeCount()
             var ts = db.TS();
             TimeSeriesLabel label = new TimeSeriesLabel("key", "MRangeCount");
             var labels = new List<TimeSeriesLabel> { label };
-            foreach (string key in keys)
+            foreach (string key in _keys)
             {
                 ts.Create(key, labels: labels);
             }
@@ -137,10 +138,10 @@ public void TestMRangeCount()
             var tuples = CreateData(ts, 50);
             long count = 5;
             var results = ts.MRange("-", "+", new List<string> { "key=MRangeCount" }, count: count);
-            Assert.Equal(keys.Length, results.Count);
+            Assert.Equal(_keys.Length, results.Count);
             for (int i = 0; i < results.Count; i++)
             {
-                Assert.Equal(keys[i], results[i].key);
+                Assert.Equal(_keys[i], results[i].key);
                 Assert.Equal(0, results[i].labels.Count);
                 Assert.Equal(tuples.GetRange(0, (int)count), results[i].values);
             }
@@ -154,17 +155,17 @@ public void TestMRangeAggregation()
             var ts = db.TS();
             TimeSeriesLabel label = new TimeSeriesLabel("key", "MRangeAggregation");
             var labels = new List<TimeSeriesLabel> { label };
-            foreach (string key in keys)
+            foreach (string key in _keys)
             {
                 ts.Create(key, labels: labels);
             }
 
             var tuples = CreateData(ts, 50);
             var results = ts.MRange("-", "+", new List<string> { "key=MRangeAggregation" }, aggregation: TsAggregation.Min, timeBucket: 50);
-            Assert.Equal(keys.Length, results.Count);
+            Assert.Equal(_keys.Length, results.Count);
             for (int i = 0; i < results.Count; i++)
             {
-                Assert.Equal(keys[i], results[i].key);
+                Assert.Equal(_keys[i], results[i].key);
                 Assert.Equal(0, results[i].labels.Count);
                 Assert.Equal(tuples, results[i].values);
             }
@@ -178,7 +179,7 @@ public void TestMRangeAlign()
             var ts = db.TS();
             TimeSeriesLabel label = new TimeSeriesLabel("key", "MRangeAlign");
             var labels = new List<TimeSeriesLabel> { label };
-            ts.Create(keys[0], labels: labels);
+            ts.Create(_keys[0], labels: labels);
             CreateData(ts, 50);
             var expected = new List<TimeSeriesTuple> {
                 new TimeSeriesTuple(0,1),
@@ -187,7 +188,7 @@ public void TestMRangeAlign()
             };
             var results = ts.MRange(0, "+", new List<string> { "key=MRangeAlign" }, align: "-", aggregation: TsAggregation.Count, timeBucket: 10, count: 3);
             Assert.Equal(1, results.Count);
-            Assert.Equal(keys[0], results[0].key);
+            Assert.Equal(_keys[0], results[0].key);
             Assert.Equal(expected, results[0].values);
             results = ts.MRange(1, 500, new List<string> { "key=MRangeAlign" }, align: "+", aggregation: TsAggregation.Count, timeBucket: 10, count: 1);
             Assert.Equal(expected[1], results[0].values[0]);
@@ -201,7 +202,7 @@ public void TestMissingFilter()
             var ts = db.TS();
             TimeSeriesLabel label = new TimeSeriesLabel("key", "MissingFilter");
             var labels = new List<TimeSeriesLabel> { label };
-            foreach (string key in keys)
+            foreach (string key in _keys)
             {
                 ts.Create(key, labels: labels);
             }
@@ -219,7 +220,7 @@ public void TestMissingTimeBucket()
             var ts = db.TS();
             TimeSeriesLabel label = new TimeSeriesLabel("key", "MissingTimeBucket");
             var labels = new List<TimeSeriesLabel> { label };
-            foreach (string key in keys)
+            foreach (string key in _keys)
             {
                 ts.Create(key, labels: labels);
             }
@@ -235,22 +236,22 @@ public void TestMRangeGroupby()
             IDatabase db = redisFixture.Redis.GetDatabase();
             db.Execute("FLUSHALL");
             var ts = db.TS();
-            for (int i = 0; i < keys.Length; i++)
+            for (int i = 0; i < _keys.Length; i++)
             {
                 var label1 = new TimeSeriesLabel("key", "MRangeGroupby");
                 var label2 = new TimeSeriesLabel("group", i.ToString());
-                ts.Create(keys[i], labels: new List<TimeSeriesLabel> { label1, label2 });
+                ts.Create(_keys[i], labels: new List<TimeSeriesLabel> { label1, label2 });
             }
 
             var tuples = CreateData(ts, 50);
             var results = ts.MRange("-", "+", new List<string> { "key=MRangeGroupby" }, withLabels: true, groupbyTuple: ("group", TsReduce.Min));
-            Assert.Equal(keys.Length, results.Count);
+            Assert.Equal(_keys.Length, results.Count);
             for (int i = 0; i < results.Count; i++)
             {
                 Assert.Equal("group=" + i, results[i].key);
                 Assert.Equal(new TimeSeriesLabel("group", i.ToString()), results[i].labels[0]);
                 Assert.Equal(new TimeSeriesLabel("__reducer__", "min"), results[i].labels[1]);
-                Assert.Equal(new TimeSeriesLabel("__source__", keys[i]), results[i].labels[2]);
+                Assert.Equal(new TimeSeriesLabel("__source__", _keys[i]), results[i].labels[2]);
                 Assert.Equal(tuples, results[i].values);
             }
         }
@@ -261,7 +262,7 @@ public void TestMRangeReduce()
             IDatabase db = redisFixture.Redis.GetDatabase();
             db.Execute("FLUSHALL");
             var ts = db.TS();
-            foreach (var key in keys)
+            foreach (var key in _keys)
             {
                 var label = new TimeSeriesLabel("key", "MRangeReduce");
                 ts.Create(key, labels: new List<TimeSeriesLabel> { label });
@@ -273,7 +274,7 @@ public void TestMRangeReduce()
             Assert.Equal("key=MRangeReduce", results[0].key);
             Assert.Equal(new TimeSeriesLabel("key", "MRangeReduce"), results[0].labels[0]);
             Assert.Equal(new TimeSeriesLabel("__reducer__", "sum"), results[0].labels[1]);
-            Assert.Equal(new TimeSeriesLabel("__source__", string.Join(",", keys)), results[0].labels[2]);
+            Assert.Equal(new TimeSeriesLabel("__source__", string.Join(",", _keys)), results[0].labels[2]);
             for (int i = 0; i < results[0].values.Count; i++)
             {
                 Assert.Equal(tuples[i].Val * 2, results[0].values[i].Val);
@@ -288,7 +289,7 @@ public void TestMRangeFilterBy()
             var ts = db.TS();
             TimeSeriesLabel label = new TimeSeriesLabel("key", "MRangeFilterBy");
             var labels = new List<TimeSeriesLabel> { label };
-            foreach (string key in keys)
+            foreach (string key in _keys)
             {
                 ts.Create(key, labels: labels);
             }
@@ -306,5 +307,36 @@ public void TestMRangeFilterBy()
                 Assert.Equal(tuples.GetRange(0, 1), results[i].values);
             }
         }
+
+        [SkipIfRedis(Is.OSSCluster)]
+        public void TestMRangeLatest()
+        {
+            IDatabase db = redisFixture.Redis.GetDatabase();
+            db.Execute("FLUSHALL");
+            var ts = db.TS();
+            var label = new TimeSeriesLabel("key", "MRangeLatest");
+            var compactedLabel = new TimeSeriesLabel("compact", "true");
+            string primaryTsKey = _keys[0], compactedTsKey = _keys[1];
+            var compactionRule = new TimeSeriesRule(
+                compactedTsKey, 
+                (long)TimeSpan.FromHours(1).TotalMilliseconds, // 1h used to force partial bucket 
+                TsAggregation.Sum);
+
+            ts.Create(primaryTsKey, labels: [label]);
+            ts.Create(compactedTsKey, labels: [label, compactedLabel]);
+            ts.CreateRule(primaryTsKey, compactionRule);
+            var tuples = CreateData(ts, 50, [primaryTsKey]);
+
+            var results = ts.MRange("-", "+", ["key=MRangeLatest", "compact=true"], latest: true);
+            Assert.Single(results);
+            Assert.Equal(compactedTsKey, results[0].key);
+            Assert.NotEmpty(results[0].values);
+            Assert.Equal(tuples.Sum(x => x.Val), results[0].values.Sum(x => x.Val));
+
+            results = ts.MRange("-", "+", ["key=MRangeLatest", "compact=true"], latest: false);
+            Assert.Single(results);
+            Assert.Equal(compactedTsKey, results[0].key);
+            Assert.Empty(results[0].values);
+        }
     }
 }
\ No newline at end of file