Flat File Assembler FFAsm issue?

Hello,
I am facing this strange problem with FFASM tool.
I have a Flat file schema xsd which is given below and i have an input
xml instance.
In the schema, i have an eDate element which may not be present in the
input xml instance.
Now, the requirement is that if eDate is not present in the input, it
should just output emptystring. basically the eDate node must be
present in the flat file output.
in my input instance there is no eDate element. Another element genDate
appears after eDate in the XSD.
i run the FFASM.exe tool (C:\\Program Files\\Microsoft BizTalk Server
2006\\SDK\\Utilities\\PipelineTools) at the command prompt with the follo
options:

ffasm Test3.xml -bs TestSchema.xsd -c -v

Test3.xml being the input xml and the TestSchema.xsd being the flat
file schema.

Now if the genDate element appears after eDate, it generates the Flat
file fine..i mean i get a eDate node (empty) before the genDate.
However if i decide that eDate should appear after genDate in the
output flat file and i swap the two elements in the xsd, the empty node
does not appear at all !!
What happens when i swap the positions of eDate and genDate?
Please help

Regards,
BM

The input instance Test3.xml is as follows:
<ns0:TT
xmlns:ns0=\”http://Test.TestSchema\”><ns0:Header><ns0:RecordType>H</ns0:RecordType><ns0:CreatedDate>2006-08-16%u00adT12:52:58</ns0:CreatedDate></ns0:
Header><ns0:Address><ns0:RecordType>A</ns0:RecordType><ns0:UserSerialNumber%u00ad>dd</ns0:UserSerialNumber></ns0:Address><ns0:GridData><ns0:RecordT
ype>G</ns0:RecordType><ns0:SerialNumber>dd</ns0:SerialNumber><ns0:genDate>2%u00ad006-07-10T10:20:37+0100</ns0:genDate><ns0:GridValue><ns0:RowNum>1<
/ns0:RowNum></ns0:GridValue><ns0:GridValue><ns0:RowNum>1</ns0:RowNum></ns0:%u00adGridValue></ns0:GridData><ns0:Trailer><ns0:RecordType>T</ns0:Recor
dType><ns0:TotalNumberOfRecords>4</ns0:TotalNumberOfRecords></ns0:Trailer><%u00ad/ns0:TT>

The TestSchema XSD is pasted below:

<?xml version=\”1.0\” encoding=\”utf-16\”?>
<xs:schema xmlns:b=\”http://schemas.microsoft.com/BizTalk/2003\”
xmlns=\”http://Test.TestSchema\” elementFormDefault=\”qualified\”
targetNamespace=\”http://Test.TestSchema\”
xmlns:xs=\”http://www.w3.org/2001/XMLSchema\”>
<xs:annotation>
<xs:appinfo>
<b:schemaInfo default_pad_char=\” \” pad_char_type=\”char\”
count_positions_by_byte=\”false\” parser_optimization=\”speed\”
lookahead_depth=\”3\” suppress_empty_nodes=\”false\”
generate_empty_nodes=\”true\” allow_early_termination=\”false\”
early_terminate_optional_fields=\”false\”
allow_message_breakup_of_infix_root=\”false\”
compile_parse_tables=\”false\” standard=\”Flat File\” root_reference=\”TT\”/>
<schemaEditorExtension:schemaInfo namespaceAlias=\”b\”
extensionClass=\”Microsoft.BizTalk.FlatFileExtension.FlatFileExtension\”
standardName=\”Flat File\”
xmlns:schemaEditorExtension=\”http://schemas.microsoft.com/BizTalk/2003/SchemaEditorExtensions\”
/>
</xs:appinfo>
</xs:annotation>
<xs:element name=\”TT\”>
<xs:annotation>
<xs:appinfo>
<b:recordInfo structure=\”delimited\”
preserve_delimiter_for_empty_data=\”true\”
suppress_trailing_delimiters=\”false\” sequence_number=\”1\”
rootTypeName=\”TT\” child_delimiter_type=\”hex\” child_delimiter=\”0x0D
0x0A\” />
</xs:appinfo>
</xs:annotation>
<xs:complexType>
<xs:sequence>
<xs:annotation>
<xs:appinfo>
<b:groupInfo sequence_number=\”0\” />
</xs:appinfo>
</xs:annotation>
<xs:element minOccurs=\”1\” maxOccurs=\”1\” name=\”Header\”>
<xs:annotation>
<xs:appinfo>
<b:recordInfo sequence_number=\”1\” structure=\”delimited\”
preserve_delimiter_for_empty_data=\”true\”
suppress_trailing_delimiters=\”false\” child_delimiter_type=\”char\”
child_delimiter=\”,\” child_order=\”infix\” />
</xs:appinfo>
</xs:annotation>
<xs:complexType>
<xs:sequence>
<xs:annotation>
<xs:appinfo>
<b:groupInfo sequence_number=\”0\” />
</xs:appinfo>
</xs:annotation>
<xs:element default=\”H\” name=\”RecordType\”
type=\”xs:string\”>
<xs:annotation>
<xs:appinfo>
<b:fieldInfo sequence_number=\”1\”
justification=\”left\” wrap_char_type=\”hex\” wrap_char=\”0x22\” />
</xs:appinfo>
</xs:annotation>
</xs:element>
<xs:element name=\”CreatedDate\” type=\”xs:string\”>
<xs:annotation>
<xs:appinfo>
<b:fieldInfo sequence_number=\”2\”
justification=\”left\” wrap_char_type=\”hex\” wrap_char=\”0x22\” />
</xs:appinfo>
</xs:annotation>
</xs:element>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:sequence minOccurs=\”0\” maxOccurs=\”unbounded\”>
<xs:annotation>
<xs:appinfo>
<b:groupInfo sequence_number=\”2\” />
</xs:appinfo>
</xs:annotation>
<xs:element minOccurs=\”0\” maxOccurs=\”unbounded\”
name=\”Address\”>
<xs:annotation>
<xs:appinfo>
<b:recordInfo sequence_number=\”1\” structure=\”delimited\”
preserve_delimiter_for_empty_data=\”true\”
suppress_trailing_delimiters=\”false\” child_delimiter_type=\”char\”
child_order=\”infix\” child_delimiter=\”,\” tag_name=\”A\” />
</xs:appinfo>
</xs:annotation>
<xs:complexType>
<xs:sequence>
<xs:annotation>
<xs:appinfo>
<b:groupInfo sequence_number=\”0\” />
</xs:appinfo>
</xs:annotation>
<xs:element default=\”A\” name=\”RecordType\”
type=\”xs:string\”>
<xs:annotation>
<xs:appinfo>
<b:fieldInfo justification=\”left\”
sequence_number=\”1\” wrap_char_type=\”hex\” wrap_char=\”0x22\” />
</xs:appinfo>
</xs:annotation>
</xs:element>
<xs:element name=\”UserSerialNumber\” type=\”xs:string\”>
<xs:annotation>
<xs:appinfo>
<b:fieldInfo sequence_number=\”2\”
justification=\”left\” wrap_char_type=\”hex\” wrap_char=\”0x22\” />
</xs:appinfo>
</xs:annotation>
</xs:element>
<xs:element default=\” \” name=\”UserName\”
type=\”xs:string\”>
<xs:annotation>
<xs:appinfo>
<b:fieldInfo sequence_number=\”3\”
justification=\”left\” wrap_char_type=\”hex\” wrap_char=\”0x22\” />
</xs:appinfo>
</xs:annotation>
</xs:element>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element minOccurs=\”0\” maxOccurs=\”unbounded\”
name=\”GridData\”>
<xs:annotation>
<xs:appinfo>
<b:recordInfo sequence_number=\”2\” structure=\”delimited\”
preserve_delimiter_for_empty_data=\”true\”
suppress_trailing_delimiters=\”false\” child_order=\”infix\”
child_delimiter_type=\”char\” child_delimiter=\”,\” tag_name=\”G\” />
</xs:appinfo>
</xs:annotation>
<xs:complexType>
<xs:sequence>
<xs:annotation>
<xs:appinfo>
<b:groupInfo sequence_number=\”0\” />
</xs:appinfo>
</xs:annotation>
<xs:element default=\”G\” name=\”RecordType\”
type=\”xs:string\”>
<xs:annotation>
<xs:appinfo>
<b:fieldInfo sequence_number=\”1\”
justification=\”left\” wrap_char_type=\”hex\” wrap_char=\”0x22\” />
</xs:appinfo>
</xs:annotation>
</xs:element>
<xs:element name=\”SerialNumber\” type=\”xs:string\”>
<xs:annotation>
<xs:appinfo>
<b:fieldInfo sequence_number=\”2\”
justification=\”left\” wrap_char_type=\”hex\” wrap_char=\”0x22\” />
</xs:appinfo>
</xs:annotation>
</xs:element>
<xs:element default=\” \” name=\”eDate\” type=\”xs:string\”>
<xs:annotation>
<xs:appinfo>
<b:fieldInfo sequence_number=\”3\”
justification=\”left\” wrap_char_type=\”hex\” wrap_char=\”0x22\” />
</xs:appinfo>
</xs:annotation>
</xs:element>
<xs:element name=\”genDate\” type=\”xs:string\”>
<xs:annotation>
<xs:appinfo>
<b:fieldInfo sequence_number=\”4\”
justification=\”left\” wrap_char_type=\”hex\” wrap_char=\”0x22\” />
</xs:appinfo>
</xs:annotation>
</xs:element>
<xs:element minOccurs=\”0\” maxOccurs=\”unbounded\”
name=\”GridValue\”>
<xs:annotation>
<xs:appinfo>
<b:recordInfo sequence_number=\”5\”
structure=\”delimited\” preserve_delimiter_for_empty_data=\”true\”
suppress_trailing_delimiters=\”false\” child_order=\”infix\”
child_delimiter_type=\”char\” child_delimiter=\”,\” />
</xs:appinfo>
</xs:annotation>
<xs:complexType>
<xs:sequence>
<xs:annotation>
<xs:appinfo>
<b:groupInfo sequence_number=\”0\” />
</xs:appinfo>
</xs:annotation>
<xs:element name=\”RowNum\” type=\”xs:string\”>
<xs:annotation>
<xs:appinfo>
<b:fieldInfo sequence_number=\”1\”
justification=\”left\” wrap_char_type=\”hex\” wrap_char=\”0x22\” />
</xs:appinfo>
</xs:annotation>
</xs:element>
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:sequence>
<xs:element minOccurs=\”1\” maxOccurs=\”1\” name=\”Trailer\”>
<xs:annotation>
<xs:appinfo>
<b:recordInfo sequence_number=\”3\” structure=\”delimited\”
preserve_delimiter_for_empty_data=\”true\”
suppress_trailing_delimiters=\”false\” child_delimiter_type=\”char\”
child_delimiter=\”,\” child_order=\”infix\” />
</xs:appinfo>
</xs:annotation>
<xs:complexType>
<xs:sequence>
<xs:annotation>
<xs:appinfo>
<b:groupInfo sequence_number=\”0\” />
</xs:appinfo>
</xs:annotation>
<xs:element default=\”T\” name=\”RecordType\”
type=\”xs:string\”>
<xs:annotation>
<xs:appinfo>
<b:fieldInfo sequence_number=\”1\”
justification=\”left\” wrap_char_type=\”hex\” wrap_char=\”0x22\” />
</xs:appinfo>
</xs:annotation>
</xs:element>
<xs:element name=\”TotalNumberOfRecords\” type=\”xs:string\”>
<xs:annotation>
<xs:appinfo>
<b:fieldInfo sequence_number=\”2\”
justification=\”left\” wrap_char_type=\”hex\” wrap_char=\”0x22\” />
</xs:appinfo>
</xs:annotation>
</xs:element>
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:schema>