1) First you Export the data into the other Server :
Right Click on Database->Tasks->Exports Data->Select DataSource(Current Server)->Select Destination(Choose new server)->Select Objects to be copied->Finish.
Now Once the Export task will done then use Update query to your destination database and delete the exported table..
IF(EXISTS(Select * from [DatabaseName.dbo.DestinationTableName]))
BEGIN
Update Databasename.dbo.[TableName in Server 2]
Set columnName = databaseName.dbo.Tablename.ColumnName From ExportedTableName
END
ELSE
BEGIN
INSERT INTO DatabaseName.dbo.[TableName in server 2] (ColumnName)
Select ColumnName From dbo.databaseName.TableName
END
Delete FROM DatabaseName.dbo.ExportedTableName
This might Help!!