Don't delete exist data with SSMA I'm trying to use Microsoft's SQL Server Migration Assistant for Sybase 5.3 ('SSMA') to migrate multiple Sybase databases (that have the same schema) to a single MSSQL database.

The first database migrated fine. But when I try to migrate data from the next one, I see lots of warnings like:

The table 'MyDatabase.dbo.MyTable' contains data.
If you continue with data migration, all data in the table will be deleted.


I don't want the existing data to be deleted, but can't find a way to do this in SSMA.
I figured it out. I had to go to Tools > Options > General > Migration and set Extended data migration options to Show.

Then I had a new Data Mig... tab for each table, and had to uncheck Truncate SQL Server table and hit Apply individually for each table. Rather laborious when you have a lot of tables... but it worked.