Ok, here's a table creation script (on SQL 2008 R2)
CREATE TABLE [dbo].[test](
[ID] [bigint] NOT NULL,
[BinValue] [varbinary](4) NOT NULL,
[LastDate] [date] NOT NULL
) ON [PRIMARY]
Data for the table is as follows:
Using "Import & Export Data (64-bit)" completes successfully but the resulting table on Postgres does not show any data on the bytea column.