Migration of certain PST files may fail with the Migration Agent logging exceptions of the form:
2015-02-17 14:22:16,406 [25] INFO ExchangeRetryAction - Details from Exchange Web Service exception: The specified folder could not be found in the store.
Exchange Web Service property error: RetryActionStartStack => at Quest.Apollo.MigrationProviders.Interfaces.GenericRetryAction.Retry[T](RetryMethod`1 retryMethod)
at Quest.Apollo.MigrationProvider.Exchange.WebServices.ExchangeWebService.BindToFolder(WellKnownFolderName wellKnownFolderName, PropertySet propertySet)
at Quest.Apollo.MigrationProvider.Exchange.WebServices.FolderQuery.GetWellKnownFolder(WellKnownFolderName wellKnownFolderName)
at Quest.Apollo.MigrationProvider.Exchange.WebServices.FolderQuery.GetWellKnownFolders()
at Quest.Apollo.MigrationProvider.Exchange.WebServices.FolderQuery.GetFolders(FolderId parentFolderId, String parentPath)
at Quest.Apollo.MigrationProvider.Exchange.WebServices.FolderQuery.GetFolders(IFolder folder)
at Quest.Apollo.MigrationProvider.Exchange.WebServices.FolderQuery.GetExchangeFolders()
at Quest.Apollo.MigrationProvider.Exchange.WebServices.ExchangeSession.CreateCache(Boolean forceReload)
at Quest.Apollo.MigrationProviders.Migrator.Migrate(IMigrationFilter filter)
at PstUtils.MigrationWorker.MigrateData(IMigrationFilter filter, PstFileData data, ShouldMigratorContinue shouldMigratorContinue)
at DellSoftware.PstMigration.Ps.Cmdlet.InvokeMigrationTask.MigrateData()
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()