原始项目是WINCC6.0,需要升级成7.5版本。

我先是把该项目移植到7.0 SP3 ASIA UP1版本，成功。信息如下：

然后，再移植到WINCC7.2。但是失败。如下：

诊断信息如下：

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PROJECT NAME: C:\Users\Fusitech\Desktop\tcpvd\tjvd\tjvd.mcp

MIGRATION OBJECTS: 

CS Database

RT Database

pictures and libraries

reports

scripts

local graphics library

Basis Process Control

START TIME:    2023-01-27 19:31:01

CS Database Migration - CCMigration_620_700 succeeded. 

CS Database Migration - CCMigration_700_703 succeeded. 

CS Database Migration - CCMigration_703_720 succeeded. 

Executing command: CCUnicodeMigrate,

EXECUTE cc_migrate_to_unicode;

SQL-Error Class(16) Line: 0State: 0 Message : The constraint 'PK__PDE#ARCHIVES__43A1090D' is being referenced by table 'PDE#TAGs', foreign key constraint 'fk_PDE#TAGs_ArcName'.

SQL-Error Class(16) Line: 0State: 0 Message : Could not drop constraint. See previous errors.

SQL-Info Class(0): *** Disabling all Triggers on each Table***

SQL-Info Class(0): **** Scripting Indices

SQL-Info Class(0): **** Scripting Foreign Keys

SQL-Info Class(0): **** Scripting Unique Constraints

SQL-Info Class(0): Scripting Default Constraints

SQL-Info Class(0):  Scripting Check Constraints

CS Database Migration - CCUnicodeMigrate succeeded. 

CS Database Migration - DbInit-Script succeeded. 

Configuration Database Migration succeeded. 

CS-Database Migration failed  hr=0x0

FINISH TIME:   2023-01-27 19:31:02

**********************************************************************

MigratorLog.txt

哪位专家帮我看看是什么问题？该怎么处理？