diff --git a/mongodump/mongodump_test.go b/mongodump/mongodump_test.go
index fbc0f3e6d..bdcb5d1ff 100644
--- a/mongodump/mongodump_test.go
+++ b/mongodump/mongodump_test.go
@@ -378,27 +378,11 @@ func setupTimeseriesWithMixedSchema(dbName string, collName string) error {
 		return createRes.Err()
 	}
 
-	// SERVER-84531 was only backported to 7.3.
-	// TODO: Run collMod command on 6.0 and 7.0 (TOOLS-3597).
-	clientFCV := testutil.GetFCV(client)
-
-	shouldAccommodateMixedSchema := clientFCV == "6.0" || clientFCV == "7.0"
-	if !shouldAccommodateMixedSchema {
-		cmp, err := testutil.CompareFCV(clientFCV, "7.3")
-		if err != nil {
-			return errors.Wrapf(err, "failed to compare client FCV (%s)", clientFCV)
-		}
-
-		shouldAccommodateMixedSchema = cmp >= 0
-	}
-
-	if shouldAccommodateMixedSchema {
-		if res := sessionProvider.DB(dbName).RunCommand(context.Background(), bson.D{
-			{"collMod", collName},
-			{"timeseriesBucketsMayHaveMixedSchemaData", true},
-		}); res.Err() != nil {
-			return res.Err()
-		}
+	if res := sessionProvider.DB(dbName).RunCommand(context.Background(), bson.D{
+		{"collMod", collName},
+		{"timeseriesBucketsMayHaveMixedSchemaData", true},
+	}); res.Err() != nil {
+		return res.Err()
 	}
 
 	bucketColl := sessionProvider.DB(dbName).Collection("system.buckets." + collName)
diff --git a/mongorestore/mongorestore_test.go b/mongorestore/mongorestore_test.go
index 362f69433..ccba145e9 100644
--- a/mongorestore/mongorestore_test.go
+++ b/mongorestore/mongorestore_test.go
@@ -2055,18 +2055,11 @@ func TestRestoreTimeseriesCollectionsWithMixedSchema(t *testing.T) {
 	fcv := testutil.GetFCV(session)
 	// TODO: Enable tests for 6.0, 7.0 and 8.0 (TOOLS-3597).
 	// The server fix for SERVER-84531 was only backported to 7.3.
-	if cmp, err := testutil.CompareFCV(fcv, "7.3"); cmp < 0 {
+	if cmp, err := testutil.CompareFCV(fcv, "6.0"); cmp < 0 {
 		if err != nil {
 			t.Fatalf("Failed to get FCV: %v", err)
 		}
-		t.Skip("Requires server with FCV 7.3 or later")
-	}
-
-	if cmp, err := testutil.CompareFCV(fcv, "8.0"); cmp >= 0 {
-		if err != nil {
-			t.Fatalf("Failed to get FCV: %v", err)
-		}
-		t.Skip("The test currently fails on v8.0 because of SERVER-92222")
+		t.Skip("Requires server with FCV 6.0 or later")
 	}
 
 	dbName := "timeseries_test_DB"