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OAB issue after migration

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In the process of finishing up a 2003 - 2010 migration but am getting the following Application Log events every morning at 4AM:

Event 9360
OABGen encountered an error while generating the changes.oab file for version 2 and 3 differential downloads of address list '\Global Address List'.  The offline address book has not been updated so clients will not be able to download the current set of changes.  Check other logged events to find the cause of this error.
If the cause of the problem was intentional or cannot be resolved, OABGen can be forced to post a full offline address book by creating the DWORD registry key 'HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MSExchangeSA\Parameters\OAL post full if diff fails' and setting it to 1 on this server.  When OABGen next generates the offline address book, clients will perform a full OAB download.  After that time, the registry key should be removed to prevent further full downloads.
- \Default Offline Address List

Event 9340
A new parent Legacy Exchange DN container value '/o=Promoshop/ou=Exchange Administrative Group (FYDIBOHF23SPDLT)/cn=Recipients' was found during generation of the differential update file for offline address list '\Global Address List'.  This will force clients using this offline address list to do a full download of the offline address list.
- \Default Offline Address List

What did I do wrong in this situation?


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