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When you migrate from Microsoft Exchange 2000 Server Instant Messaging to Microsoft Office Live Communications Server 2003, you may experience any one of the following symptoms:
Scripts construct the Session Initiation Protocol (SIP) Universal Resource Identifiers (URIs) inconsistently even if the migration appears to succeed.
When you rename the URI to use the Exchange Instant Messaging account instead of the domain account name, the process fails with an event log entry that indicates that the target URI is in use in the database.
You receive a "Failed to perform LDAP Query for user" message because an error in parsing logic occurs when you perform a Lightweight Directory Access Protocol(LDAP) search to retrieve attributes from a user object.
This problem occurs because the scripting files in Exchange 2000 Server Instant Messaging must be updated to migrate to Live Communications Server 2003. The following four scripting files have been updated since Live Communications Server 2003 shipped. These files are located in the Migration\ExchangeImMigration folder on the Exchange 2000 Server CD-ROM.
To resolve this problem, download the updated scripting files, and then complete migration from Exchange 2000 Server Instant Messaging to Live Communications Server 2003. To download the updated scripting files, visit the following Microsoft Web site: