diff --git a/icu4c/source/data/brkitr/lstm/Burmese_codepoints_exclusive_model4_heavy.txt b/icu4c/source/data/brkitr/lstm/Burmese_codepoints_exclusive_model4_heavy.txt
index 9a1cc71df22..fe010655f56 100644
--- a/icu4c/source/data/brkitr/lstm/Burmese_codepoints_exclusive_model4_heavy.txt
+++ b/icu4c/source/data/brkitr/lstm/Burmese_codepoints_exclusive_model4_heavy.txt
@@ -1,4 +1,4 @@
-// © 2021 and later: Unicode, Inc. and others.
+// © 2021 and later: Unicode, Inc. and others.
 // License & terms of use: http://www.unicode.org/copyright.html
 Burmese_codepoints_exclusive_model4_heavy:table(nofallback){
     model{"Burmese_codepoints_exclusive_model4_heavy"}
diff --git a/icu4c/source/data/brkitr/lstm/Burmese_codepoints_exclusive_model5_heavy.txt b/icu4c/source/data/brkitr/lstm/Burmese_codepoints_exclusive_model5_heavy.txt
index 3ec035b3c5c..b6bf5f9fdc1 100644
--- a/icu4c/source/data/brkitr/lstm/Burmese_codepoints_exclusive_model5_heavy.txt
+++ b/icu4c/source/data/brkitr/lstm/Burmese_codepoints_exclusive_model5_heavy.txt
@@ -1,4 +1,4 @@
-// © 2021 and later: Unicode, Inc. and others.
+// © 2021 and later: Unicode, Inc. and others.
 // License & terms of use: http://www.unicode.org/copyright.html
 Burmese_codepoints_exclusive_model5_heavy:table(nofallback){
     model{"Burmese_codepoints_exclusive_model5_heavy"}
diff --git a/icu4c/source/data/brkitr/lstm/Burmese_codepoints_exclusive_model7_heavy.txt b/icu4c/source/data/brkitr/lstm/Burmese_codepoints_exclusive_model7_heavy.txt
index 21a20abac78..1000724ee56 100644
--- a/icu4c/source/data/brkitr/lstm/Burmese_codepoints_exclusive_model7_heavy.txt
+++ b/icu4c/source/data/brkitr/lstm/Burmese_codepoints_exclusive_model7_heavy.txt
@@ -1,4 +1,4 @@
-// © 2021 and later: Unicode, Inc. and others.
+// © 2021 and later: Unicode, Inc. and others.
 // License & terms of use: http://www.unicode.org/copyright.html
 Burmese_codepoints_exclusive_model7_heavy:table(nofallback){
     model{"Burmese_codepoints_exclusive_model7_heavy"}
diff --git a/icu4c/source/data/brkitr/lstm/Burmese_graphclust_model4_heavy.txt b/icu4c/source/data/brkitr/lstm/Burmese_graphclust_model4_heavy.txt
index 0f66fd57b89..e2711d758d4 100644
--- a/icu4c/source/data/brkitr/lstm/Burmese_graphclust_model4_heavy.txt
+++ b/icu4c/source/data/brkitr/lstm/Burmese_graphclust_model4_heavy.txt
@@ -1,4 +1,4 @@
-// © 2021 and later: Unicode, Inc. and others.
+// © 2021 and later: Unicode, Inc. and others.
 // License & terms of use: http://www.unicode.org/copyright.html
 Burmese_graphclust_model4_heavy:table(nofallback){
     model{"Burmese_graphclust_model4_heavy"}
diff --git a/icu4c/source/data/brkitr/lstm/Burmese_graphclust_model5_heavy.txt b/icu4c/source/data/brkitr/lstm/Burmese_graphclust_model5_heavy.txt
index 93ab54db60f..ac51de161a5 100644
--- a/icu4c/source/data/brkitr/lstm/Burmese_graphclust_model5_heavy.txt
+++ b/icu4c/source/data/brkitr/lstm/Burmese_graphclust_model5_heavy.txt
@@ -1,4 +1,4 @@
-// © 2021 and later: Unicode, Inc. and others.
+// © 2021 and later: Unicode, Inc. and others.
 // License & terms of use: http://www.unicode.org/copyright.html
 Burmese_graphclust_model5_heavy:table(nofallback){
     model{"Burmese_graphclust_model5_heavy"}
diff --git a/icu4c/source/data/brkitr/lstm/Burmese_graphclust_model7_heavy.txt b/icu4c/source/data/brkitr/lstm/Burmese_graphclust_model7_heavy.txt
index 069b3cca2a2..945633d7d8b 100644
--- a/icu4c/source/data/brkitr/lstm/Burmese_graphclust_model7_heavy.txt
+++ b/icu4c/source/data/brkitr/lstm/Burmese_graphclust_model7_heavy.txt
@@ -1,4 +1,4 @@
-// © 2021 and later: Unicode, Inc. and others.
+// © 2021 and later: Unicode, Inc. and others.
 // License & terms of use: http://www.unicode.org/copyright.html
 Burmese_graphclust_model7_heavy:table(nofallback){
     model{"Burmese_graphclust_model7_heavy"}
diff --git a/icu4c/source/data/brkitr/lstm/Thai_codepoints_exclusive_model4_heavy.txt b/icu4c/source/data/brkitr/lstm/Thai_codepoints_exclusive_model4_heavy.txt
index a5fee26ebaa..54a9882edaa 100644
--- a/icu4c/source/data/brkitr/lstm/Thai_codepoints_exclusive_model4_heavy.txt
+++ b/icu4c/source/data/brkitr/lstm/Thai_codepoints_exclusive_model4_heavy.txt
@@ -1,4 +1,4 @@
-// © 2021 and later: Unicode, Inc. and others.
+// © 2021 and later: Unicode, Inc. and others.
 // License & terms of use: http://www.unicode.org/copyright.html
 Thai_codepoints_exclusive_model4_heavy:table(nofallback){
     model{"Thai_codepoints_exclusive_model4_heavy"}
diff --git a/icu4c/source/data/brkitr/lstm/Thai_codepoints_exclusive_model5_heavy.txt b/icu4c/source/data/brkitr/lstm/Thai_codepoints_exclusive_model5_heavy.txt
index 5e4ee8eca00..12051cc7183 100644
--- a/icu4c/source/data/brkitr/lstm/Thai_codepoints_exclusive_model5_heavy.txt
+++ b/icu4c/source/data/brkitr/lstm/Thai_codepoints_exclusive_model5_heavy.txt
@@ -1,4 +1,4 @@
-// © 2021 and later: Unicode, Inc. and others.
+// © 2021 and later: Unicode, Inc. and others.
 // License & terms of use: http://www.unicode.org/copyright.html
 Thai_codepoints_exclusive_model5_heavy:table(nofallback){
     model{"Thai_codepoints_exclusive_model5_heavy"}
diff --git a/icu4c/source/data/brkitr/lstm/Thai_codepoints_exclusive_model7_heavy.txt b/icu4c/source/data/brkitr/lstm/Thai_codepoints_exclusive_model7_heavy.txt
index 26b1bb72bab..a5d0b8bb5bc 100644
--- a/icu4c/source/data/brkitr/lstm/Thai_codepoints_exclusive_model7_heavy.txt
+++ b/icu4c/source/data/brkitr/lstm/Thai_codepoints_exclusive_model7_heavy.txt
@@ -1,4 +1,4 @@
-// © 2021 and later: Unicode, Inc. and others.
+// © 2021 and later: Unicode, Inc. and others.
 // License & terms of use: http://www.unicode.org/copyright.html
 Thai_codepoints_exclusive_model7_heavy:table(nofallback){
     model{"Thai_codepoints_exclusive_model7_heavy"}
diff --git a/icu4c/source/data/brkitr/lstm/Thai_graphclust_model4_heavy.txt b/icu4c/source/data/brkitr/lstm/Thai_graphclust_model4_heavy.txt
index e0b50fabdaa..dc77bc958fe 100644
--- a/icu4c/source/data/brkitr/lstm/Thai_graphclust_model4_heavy.txt
+++ b/icu4c/source/data/brkitr/lstm/Thai_graphclust_model4_heavy.txt
@@ -1,4 +1,4 @@
-// © 2021 and later: Unicode, Inc. and others.
+// © 2021 and later: Unicode, Inc. and others.
 // License & terms of use: http://www.unicode.org/copyright.html
 Thai_graphclust_model4_heavy:table(nofallback){
     model{"Thai_graphclust_model4_heavy"}
diff --git a/icu4c/source/data/brkitr/lstm/Thai_graphclust_model5_heavy.txt b/icu4c/source/data/brkitr/lstm/Thai_graphclust_model5_heavy.txt
index 0f44c62c0a7..76b86a029f1 100644
--- a/icu4c/source/data/brkitr/lstm/Thai_graphclust_model5_heavy.txt
+++ b/icu4c/source/data/brkitr/lstm/Thai_graphclust_model5_heavy.txt
@@ -1,4 +1,4 @@
-// © 2021 and later: Unicode, Inc. and others.
+// © 2021 and later: Unicode, Inc. and others.
 // License & terms of use: http://www.unicode.org/copyright.html
 Thai_graphclust_model5_heavy:table(nofallback){
     model{"Thai_graphclust_model5_heavy"}
diff --git a/icu4c/source/data/brkitr/lstm/Thai_graphclust_model7_heavy.txt b/icu4c/source/data/brkitr/lstm/Thai_graphclust_model7_heavy.txt
index 7b252c52400..9c7985d3b4f 100644
--- a/icu4c/source/data/brkitr/lstm/Thai_graphclust_model7_heavy.txt
+++ b/icu4c/source/data/brkitr/lstm/Thai_graphclust_model7_heavy.txt
@@ -1,4 +1,4 @@
-// © 2021 and later: Unicode, Inc. and others.
+// © 2021 and later: Unicode, Inc. and others.
 // License & terms of use: http://www.unicode.org/copyright.html
 Thai_graphclust_model7_heavy:table(nofallback){
     model{"Thai_graphclust_model7_heavy"}
diff --git a/icu4c/source/test/testdata/BUILDRULES.py b/icu4c/source/test/testdata/BUILDRULES.py
index 7e25a1ac648..78745322199 100644
--- a/icu4c/source/test/testdata/BUILDRULES.py
+++ b/icu4c/source/test/testdata/BUILDRULES.py
@@ -63,7 +63,7 @@ def generate_rb(config, io, common_vars):
             input_files = [InFile("%s.txt" % bn) for bn in basenames],
             output_files = [OutFile("%s.res" % bn) for bn in basenames],
             tool = IcuTool("genrb"),
-            args = "-q -s {IN_DIR} -eUTF-8 -d {OUT_DIR} {INPUT_FILE}",
+            args = "-q -s {IN_DIR} -d {OUT_DIR} {INPUT_FILE}",
             format_with = {},
             repeat_with = {}
         ),
diff --git a/icu4c/source/test/testdata/Burmese_graphclust_model5_heavy.txt b/icu4c/source/test/testdata/Burmese_graphclust_model5_heavy.txt
index 93ab54db60f..ac51de161a5 100644
--- a/icu4c/source/test/testdata/Burmese_graphclust_model5_heavy.txt
+++ b/icu4c/source/test/testdata/Burmese_graphclust_model5_heavy.txt
@@ -1,4 +1,4 @@
-// © 2021 and later: Unicode, Inc. and others.
+// © 2021 and later: Unicode, Inc. and others.
 // License & terms of use: http://www.unicode.org/copyright.html
 Burmese_graphclust_model5_heavy:table(nofallback){
     model{"Burmese_graphclust_model5_heavy"}
diff --git a/icu4c/source/test/testdata/Thai_codepoints_exclusive_model5_heavy.txt b/icu4c/source/test/testdata/Thai_codepoints_exclusive_model5_heavy.txt
index 5e4ee8eca00..12051cc7183 100644
--- a/icu4c/source/test/testdata/Thai_codepoints_exclusive_model5_heavy.txt
+++ b/icu4c/source/test/testdata/Thai_codepoints_exclusive_model5_heavy.txt
@@ -1,4 +1,4 @@
-// © 2021 and later: Unicode, Inc. and others.
+// © 2021 and later: Unicode, Inc. and others.
 // License & terms of use: http://www.unicode.org/copyright.html
 Thai_codepoints_exclusive_model5_heavy:table(nofallback){
     model{"Thai_codepoints_exclusive_model5_heavy"}
diff --git a/icu4c/source/test/testdata/Thai_graphclust_model4_heavy.txt b/icu4c/source/test/testdata/Thai_graphclust_model4_heavy.txt
index e0b50fabdaa..dc77bc958fe 100644
--- a/icu4c/source/test/testdata/Thai_graphclust_model4_heavy.txt
+++ b/icu4c/source/test/testdata/Thai_graphclust_model4_heavy.txt
@@ -1,4 +1,4 @@
-// © 2021 and later: Unicode, Inc. and others.
+// © 2021 and later: Unicode, Inc. and others.
 // License & terms of use: http://www.unicode.org/copyright.html
 Thai_graphclust_model4_heavy:table(nofallback){
     model{"Thai_graphclust_model4_heavy"}