br: adjust br related statement (pingcap#17739)

br/br-snapshot-guide.md

@@ -175,14 +175,11 @@ tiup br restore full \
 +-----------------------------------------------------+
 ```
 
-When you restore data related to system privilege, note the following:
+When you restore data related to system privilege, note that before restoring data, BR checks whether the system tables in the target cluster are compatible with those in the backup data. "Compatible" means that all the following conditions are met:
 
-- Before v7.6.0, BR does not restore user data with `user` as `cloud_admin` and `host` as `'%'`. This user is reserved for TiDB Cloud. Starting from v7.6.0, BR supports restoring all user data (including `cloud_admin`) by default.
-- Before restoring data, BR checks whether the system tables in the target cluster are compatible with those in the backup data. "Compatible" means that all the following conditions are met:
-
-    - The target cluster has the same system tables as the backup data.
-    - The **number of columns** in the system privilege table of the target cluster is the same as that in the backup data. The column order is not important.
-    - The columns in the system privilege table of the target cluster are compatible with that in the backup data. If the data type of the column is a type with a length (such as integer and string), the length in the target cluster must be >= the length in the backup data. If the data type of the column is an `ENUM` type, the number of `ENUM` values in the target cluster must be a superset of that in the backup data.
+- The target cluster has the same system tables as the backup data.
+- The **number of columns** in the system privilege table of the target cluster is the same as that in the backup data. The column order is not important.
+- The columns in the system privilege table of the target cluster are compatible with that in the backup data. If the data type of the column is a type with a length (such as integer and string), the length in the target cluster must be >= the length in the backup data. If the data type of the column is an `ENUM` type, the number of `ENUM` values in the target cluster must be a superset of that in the backup data.
 
 ## Performance and impact
 

releases/release-7.6.0.md

@@ -208,7 +208,7 @@ Quick access: [Quick start](https://docs.pingcap.com/tidb/v7.6/quick-start-with-
 
     Starting from v5.1.0, when you back up snapshots, BR automatically backs up system tables in the `mysql` schema, but does not restore these system tables by default. In v6.2.0, BR adds the parameter `--with-sys-table` to support restoring data in some system tables, providing more flexibility in operations.
 
-    To further reduce your management overhead and provide more intuitive default behavior, starting from v7.6.0, BR enables the parameter `--with-sys-table` by default and supports restoring user data for the `cloud_admin` user. This means that BR restores some system tables by default during restoration, especially user account and table statistics data. This improvement makes backup and restore operations more intuitive, thereby reducing the burden of manual configuration and improving the overall operation experience.
+    To further reduce your management overhead and provide more intuitive default behavior, starting from v7.6.0, BR enables the parameter `--with-sys-table` by default. This means that BR restores some system tables by default during restoration, especially user account and table statistics data. This improvement makes backup and restore operations more intuitive, thereby reducing the burden of manual configuration and improving the overall operation experience.
 
     For more information, see [documentation](/br/br-snapshot-guide.md).
 

tidb-cloud/tidb-cloud-release-notes.md

@@ -56,9 +56,9 @@ This page lists the release notes of [TiDB Cloud](https://www.pingcap.com/tidb-c
 
 **General changes**
 
-- When you restore data from TiDB Dedicated clusters, the default behavior is now modified from restoring without user accounts to restoring with all user accounts, including the `cloud_admin@'%'` account.
+- When you restore data from TiDB Dedicated clusters, the default behavior is now modified from restoring without user accounts to restoring with all user accounts.
 
-    For more information, see [BackUp and Restore TiDB Dedicated Data](/tidb-cloud/backup-and-restore.md).
+    For more information, see [Back Up and Restore TiDB Dedicated Data](/tidb-cloud/backup-and-restore.md).
 
 - Introduce event filters for changefeeds.