diff --git a/services/appconfiguration/mgmt/2019-10-01/appconfiguration/CHANGELOG.md b/services/appconfiguration/mgmt/2019-10-01/appconfiguration/CHANGELOG.md
index 52911e4cc5e4..a1ecf841edb0 100644
--- a/services/appconfiguration/mgmt/2019-10-01/appconfiguration/CHANGELOG.md
+++ b/services/appconfiguration/mgmt/2019-10-01/appconfiguration/CHANGELOG.md
@@ -1,2 +1,2 @@
-# Change History
+# Unreleased
 
diff --git a/services/appconfiguration/mgmt/2019-10-01/appconfiguration/_meta.json b/services/appconfiguration/mgmt/2019-10-01/appconfiguration/_meta.json
index 034cc64db698..22bff15ac9bc 100644
--- a/services/appconfiguration/mgmt/2019-10-01/appconfiguration/_meta.json
+++ b/services/appconfiguration/mgmt/2019-10-01/appconfiguration/_meta.json
@@ -1,5 +1,5 @@
 {
-  "commit": "3c764635e7d442b3e74caf593029fcd440b3ef82",
+  "commit": "dc2115b318dfcc07e77044b4bb08bd6d5516b4ec",
   "readme": "/_/azure-rest-api-specs/specification/appconfiguration/resource-manager/readme.md",
   "tag": "package-2019-10-01",
   "use": "@microsoft.azure/autorest.go@2.1.187",
diff --git a/services/appconfiguration/mgmt/2020-06-01/appconfiguration/CHANGELOG.md b/services/appconfiguration/mgmt/2020-06-01/appconfiguration/CHANGELOG.md
index 52911e4cc5e4..a1ecf841edb0 100644
--- a/services/appconfiguration/mgmt/2020-06-01/appconfiguration/CHANGELOG.md
+++ b/services/appconfiguration/mgmt/2020-06-01/appconfiguration/CHANGELOG.md
@@ -1,2 +1,2 @@
-# Change History
+# Unreleased
 
diff --git a/services/appconfiguration/mgmt/2020-06-01/appconfiguration/_meta.json b/services/appconfiguration/mgmt/2020-06-01/appconfiguration/_meta.json
index cde299973792..5788d0aaa497 100644
--- a/services/appconfiguration/mgmt/2020-06-01/appconfiguration/_meta.json
+++ b/services/appconfiguration/mgmt/2020-06-01/appconfiguration/_meta.json
@@ -1,5 +1,5 @@
 {
-  "commit": "3c764635e7d442b3e74caf593029fcd440b3ef82",
+  "commit": "dc2115b318dfcc07e77044b4bb08bd6d5516b4ec",
   "readme": "/_/azure-rest-api-specs/specification/appconfiguration/resource-manager/readme.md",
   "tag": "package-2020-06-01",
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diff --git a/services/preview/appconfiguration/mgmt/2019-02-01-preview/appconfiguration/CHANGELOG.md b/services/preview/appconfiguration/mgmt/2019-02-01-preview/appconfiguration/CHANGELOG.md
index 52911e4cc5e4..a1ecf841edb0 100644
--- a/services/preview/appconfiguration/mgmt/2019-02-01-preview/appconfiguration/CHANGELOG.md
+++ b/services/preview/appconfiguration/mgmt/2019-02-01-preview/appconfiguration/CHANGELOG.md
@@ -1,2 +1,2 @@
-# Change History
+# Unreleased
 
diff --git a/services/preview/appconfiguration/mgmt/2019-02-01-preview/appconfiguration/_meta.json b/services/preview/appconfiguration/mgmt/2019-02-01-preview/appconfiguration/_meta.json
index 17f86cb6fd45..d702c5a8f490 100644
--- a/services/preview/appconfiguration/mgmt/2019-02-01-preview/appconfiguration/_meta.json
+++ b/services/preview/appconfiguration/mgmt/2019-02-01-preview/appconfiguration/_meta.json
@@ -1,5 +1,5 @@
 {
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+  "commit": "dc2115b318dfcc07e77044b4bb08bd6d5516b4ec",
   "readme": "/_/azure-rest-api-specs/specification/appconfiguration/resource-manager/readme.md",
   "tag": "package-2019-02-01-preview",
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diff --git a/services/preview/appconfiguration/mgmt/2019-11-01-preview/appconfiguration/CHANGELOG.md b/services/preview/appconfiguration/mgmt/2019-11-01-preview/appconfiguration/CHANGELOG.md
index 52911e4cc5e4..a1ecf841edb0 100644
--- a/services/preview/appconfiguration/mgmt/2019-11-01-preview/appconfiguration/CHANGELOG.md
+++ b/services/preview/appconfiguration/mgmt/2019-11-01-preview/appconfiguration/CHANGELOG.md
@@ -1,2 +1,2 @@
-# Change History
+# Unreleased
 
diff --git a/services/preview/appconfiguration/mgmt/2019-11-01-preview/appconfiguration/_meta.json b/services/preview/appconfiguration/mgmt/2019-11-01-preview/appconfiguration/_meta.json
index 1ab2cb576b7a..cbcce2a1885f 100644
--- a/services/preview/appconfiguration/mgmt/2019-11-01-preview/appconfiguration/_meta.json
+++ b/services/preview/appconfiguration/mgmt/2019-11-01-preview/appconfiguration/_meta.json
@@ -1,5 +1,5 @@
 {
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   "readme": "/_/azure-rest-api-specs/specification/appconfiguration/resource-manager/readme.md",
   "tag": "package-2019-11-01-preview",
   "use": "@microsoft.azure/autorest.go@2.1.187",
diff --git a/services/preview/appconfiguration/mgmt/2020-07-01-preview/appconfiguration/CHANGELOG.md b/services/preview/appconfiguration/mgmt/2020-07-01-preview/appconfiguration/CHANGELOG.md
index 52911e4cc5e4..a1ecf841edb0 100644
--- a/services/preview/appconfiguration/mgmt/2020-07-01-preview/appconfiguration/CHANGELOG.md
+++ b/services/preview/appconfiguration/mgmt/2020-07-01-preview/appconfiguration/CHANGELOG.md
@@ -1,2 +1,2 @@
-# Change History
+# Unreleased
 
diff --git a/services/preview/appconfiguration/mgmt/2020-07-01-preview/appconfiguration/_meta.json b/services/preview/appconfiguration/mgmt/2020-07-01-preview/appconfiguration/_meta.json
index 89a1a643efeb..291aa656be36 100644
--- a/services/preview/appconfiguration/mgmt/2020-07-01-preview/appconfiguration/_meta.json
+++ b/services/preview/appconfiguration/mgmt/2020-07-01-preview/appconfiguration/_meta.json
@@ -1,5 +1,5 @@
 {
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   "readme": "/_/azure-rest-api-specs/specification/appconfiguration/resource-manager/readme.md",
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diff --git a/services/preview/appconfiguration/mgmt/2021-03-01-preview/appconfiguration/CHANGELOG.md b/services/preview/appconfiguration/mgmt/2021-03-01-preview/appconfiguration/CHANGELOG.md
index 52911e4cc5e4..a1ecf841edb0 100644
--- a/services/preview/appconfiguration/mgmt/2021-03-01-preview/appconfiguration/CHANGELOG.md
+++ b/services/preview/appconfiguration/mgmt/2021-03-01-preview/appconfiguration/CHANGELOG.md
@@ -1,2 +1,2 @@
-# Change History
+# Unreleased
 
diff --git a/services/preview/appconfiguration/mgmt/2021-03-01-preview/appconfiguration/_meta.json b/services/preview/appconfiguration/mgmt/2021-03-01-preview/appconfiguration/_meta.json
index 759756d41f3f..5af992ed5d25 100644
--- a/services/preview/appconfiguration/mgmt/2021-03-01-preview/appconfiguration/_meta.json
+++ b/services/preview/appconfiguration/mgmt/2021-03-01-preview/appconfiguration/_meta.json
@@ -1,5 +1,5 @@
 {
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+  "commit": "dc2115b318dfcc07e77044b4bb08bd6d5516b4ec",
   "readme": "/_/azure-rest-api-specs/specification/appconfiguration/resource-manager/readme.md",
   "tag": "package-2021-03-01-preview",
   "use": "@microsoft.azure/autorest.go@2.1.187",
diff --git a/services/preview/appconfiguration/mgmt/2021-10-01-preview/appconfiguration/CHANGELOG.md b/services/preview/appconfiguration/mgmt/2021-10-01-preview/appconfiguration/CHANGELOG.md
index 52911e4cc5e4..a1ecf841edb0 100644
--- a/services/preview/appconfiguration/mgmt/2021-10-01-preview/appconfiguration/CHANGELOG.md
+++ b/services/preview/appconfiguration/mgmt/2021-10-01-preview/appconfiguration/CHANGELOG.md
@@ -1,2 +1,2 @@
-# Change History
+# Unreleased
 
diff --git a/services/preview/appconfiguration/mgmt/2021-10-01-preview/appconfiguration/_meta.json b/services/preview/appconfiguration/mgmt/2021-10-01-preview/appconfiguration/_meta.json
index da121c2deb57..da948ad7da83 100644
--- a/services/preview/appconfiguration/mgmt/2021-10-01-preview/appconfiguration/_meta.json
+++ b/services/preview/appconfiguration/mgmt/2021-10-01-preview/appconfiguration/_meta.json
@@ -1,5 +1,5 @@
 {
-  "commit": "58cb0aa2979e64c7335cc26fe45a1854a6d0b7ad",
+  "commit": "dc2115b318dfcc07e77044b4bb08bd6d5516b4ec",
   "readme": "/_/azure-rest-api-specs/specification/appconfiguration/resource-manager/readme.md",
   "tag": "package-2021-10-01-preview",
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