diff --git a/test/SlowTests/Issues/RavenDB_22128.cs b/test/SlowTests/Issues/RavenDB_22128.cs
new file mode 100644
index 000000000000..633588bb6cc6
--- /dev/null
+++ b/test/SlowTests/Issues/RavenDB_22128.cs
@@ -0,0 +1,70 @@
+using System;
+using System.Collections.Generic;
+using Raven.Client;
+using Raven.Client.Documents;
+using SlowTests.Core.Utils.Entities;
+using SlowTests.Server.Documents.ETL;
+using Tests.Infrastructure;
+using Xunit;
+using Xunit.Abstractions;
+
+namespace SlowTests.Issues
+{
+    public class RavenDB_22128 : EtlTestBase
+    {
+        public RavenDB_22128(ITestOutputHelper output) : base(output)
+        {
+        }
+
+        private const string IncrementalTsName = Constants.Headers.IncrementalTimeSeriesPrefix + "HeartRate";
+        private const string TsName = "HeartRate";
+
+        [RavenFact(RavenTestCategory.TimeSeries | RavenTestCategory.Etl)]
+        public void TimeSeriesEtlShouldSkipIncrementalTsBasingOnUpperCasedIncPrefix()
+        {
+            var collections = new List<string> { "Users" };
+
+            const string etlScript = """
+                                 loadToUsers(this);
+                                 function loadTimeSeriesOfUsersBehavior(doc, ts)
+                                 {
+                                     if (ts.startsWith("INC")){
+                                         return false;
+                                     }
+                                     return true;
+                                 }
+                                 """;
+
+            (DocumentStore src, DocumentStore dest, _) = CreateSrcDestAndAddEtl(collections, script: etlScript);
+            var baseline = RavenTestHelper.UtcToday;
+            var etlDone = WaitForEtl(src, (s, statistics) => statistics.LoadSuccesses > 0);
+
+            using (var session = src.OpenSession())
+            {
+                session.Store(new User { Name = "Oren" }, "users/ayende");
+                session.Store(new User { Name = "Gracjan" }, "users/poisson");
+                var ts = session.IncrementalTimeSeriesFor("users/ayende", IncrementalTsName);
+                var ts2 = session.TimeSeriesFor("users/poisson", TsName);
+                ts.Increment(baseline, 100_000);
+                ts2.Append(baseline, 100);
+                session.SaveChanges();
+            }
+
+            Assert.True(etlDone.Wait(TimeSpan.FromSeconds(30)));
+
+            using (var session = dest.OpenSession())
+            {
+                var ts = session.IncrementalTimeSeriesFor("users/ayende", IncrementalTsName);
+                var ts2 = session.TimeSeriesFor("users/poisson", TsName);
+                var incTsEntries = ts.Get();
+                var tsEntries = ts2.Get();
+
+                Assert.Equal(1, tsEntries.Length);
+
+                // should be filtered
+                Assert.Null(incTsEntries);
+            }
+        }
+
+    }
+}