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Update backup-and-restore-overview.md #20358

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Feb 24, 2025
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Update backup-and-restore-overview.md #20358

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6 changes: 3 additions & 3 deletions br/backup-and-restore-overview.md
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Expand Up @@ -145,9 +145,9 @@ This section introduces the BR compatibility information for all [Long-Term Supp

> **Note:**
>
> Known issue: Starting from version v7.2.0, some system table fields in newly created clusters are case-sensitive. However, for clusters that are **upgraded online** from versions earlier than v7.2.0 to v7.2.0 or later, the corresponding system table fields remain case-insensitive. Backup and restore operations involving system tables between these two types of clusters might fail. For more details, see [Issue #43717](https://github.com/pingcap/tidb/issues/43717).
> Known issue: Starting from version v7.2.0, fields of some system tables in newly created clusters become case-sensitive. However, for clusters that are **upgraded online** from versions earlier than v7.2.0 to v7.2.0 or later, the corresponding fields remain case-insensitive. Backup and restore operations involving system tables between these two types of clusters will fail. For more details, see [Issue #43717](https://github.com/pingcap/tidb/issues/43717).

The following table lists the compatibility matrix for full backups. Note that all data in the table comes from newly created clusters.
The following table lists the compatibility matrix for full backups. For clusters upgraded from a version prior to v7.2.0 to v7.2.0 or later, their behavior is consistent with that of backups from v7.1.0.

| Backup version | Compatible restore versions | Incompatible restore versions |
|:---------|:----------------|:------------------|
Expand All @@ -156,7 +156,7 @@ The following table lists the compatibility matrix for full backups. Note that a
| v7.5.0 | v7.5.0 and later | - |
| v8.1.0 | v8.1.0 and later | - |

The following table lists the compatibility matrix for log backups. Note that all data in the table comes from newly created clusters.
The following table lists the compatibility matrix for log backups. For clusters upgraded from a version prior to v7.2.0 to v7.2.0 or later, their behavior is consistent with that of backups from v7.1.0.

| Backup version | Compatible restore versions | Incompatible restore versions |
|:---------|:----------------|:------------------|
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