The import organization tool is very useful for setting up test or development environements with full production level data. However, I ran into a problem importing today, when importing the organization, I got the following fatal error:
System.InvalidOperationException: ExecuteNonQuery requires an open and available Connection. The connection's current state is closed.
After a bit of googling I found that this had been discussed in the CRM forums: http://social.microsoft.com/Forums/en/crmdeployment/thread/53c616e8-c454-48ec-9962-759071a82358
Since I imported the organization, mainly to work with duplicates processing, I just removed all custom reports from the CRM database manually and the import went just fine.
CEO, Chief Architect and co-Founder at CRM-konsulterna AB