Error deploying data tier application to SQL Azure at "Registering metadata for database" step ... should I care?

Question

I'd like to move an on-premesis SQL Server Database to SQL Azure. I've used SQL Mgmt Studio to Extract Data Tier Application and save my db as a dacpac file. Now I'm connected to my Azure server and I've chosen to Deploy Data Tier Application. I select my
dacpac and the deploy starts but then on the last step "Registering metadata for database" it times out. I've tried it a couple of times and each time the deployed database is there and appears to be fully populated, but I'm not sure if I can ignore
that error and continue. What is supposed to happen in that step, and should I expect it to fail when deploying to SQL Azure? 
I'm following the steps here http://msdn.microsoft.com/en-us/library/hh694043.aspx in the Using Migration Tools > Data-tier Application DAC Package section, except that to deploy there's no SQL Mgmt Studio > Object Explorer [server]
> Management >"Data Tier Applications" node, so I'm deploying by right-clicking on the server name and choosing "Deploy Data-tier Application". 
My (total) guess here is that it's deployed the database fine and it's doing whatever magic happens when you register a data tier application, except that it's not working for SQL Azure. 
I'm running against a server created for the new Azure service tiers, not against a Web/Business edition server. 
The full details of error I get are below. 
thanks, 
Rory
TITLE: Microsoft SQL Server Management Studio
Could not deploy package.
Warning SQL0: A project which specifies SQL Server 2008 as the target platform may experience compatibility issues with SQL Azure.
 (Microsoft.SqlServer.Dac)
ADDITIONAL INFORMATION:
Unable to register data-tier application: Unable to reconnect to database: Timeout expired.  The timeout period elapsed prior to completion of the operation or the server is not responding. (Microsoft.Data.Tools.Schema.Sql)
Unable to reconnect to database: Timeout expired.  The timeout period elapsed prior to completion of the operation or the server is not responding. (Microsoft.Data.Tools.Schema.Sql)
Timeout expired.  The timeout period elapsed prior to completion of the operation or the server is not responding. (Microsoft SQL Server, Error: -2)
For help, click: http://go.microsoft.com/fwlink?ProdName=Microsoft%20SQL%20Server&ProdVer=11.00.9213&EvtSrc=MSSQLServer&EvtID=-2&LinkId=20476
The wait operation timed out
BUTTONS:
OK

Answer 1

Hello,
The registration process creates a DAC definition that defines the objects in the database, and register the DAC definition in the master system database in Windows Azure SQL Database.
Based on the error message, there is timeout error when connect to SQL Database. Did you deploy a large database? When move large data to Azure SQL Database, it is recommended to use SQL Server Integration Services (SSIS) and BCP utility.
Or you can try to create a client application with the Data-Tier Application Framework (DACFx) client tool to import database and handle connection loss it by re-establish the connection.
Reference: http://sqldacexamples.codeplex.com/
Regards,
Fanny Liu
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Fanny Liu
TechNet Community Support