I have a similar issue. I have an InfoPath form which no longer uses digital signatures, but has orphan signature groups in the main data source - these cause serialization problems and so i want to remove them.
In my Main data source I have a signatures1 group with a signatures3 group in it - the folder icon has a little lock symbol on it. All properties are read only. Under Form Options, Digital Signatures i have 'Do Not Enable digital signatures' There is nothing listed in 'Set of signable data'. The xsd has the following (see below). I CAN remove the elements directly from the xsd, but if I try to 'convert main data source', I get 'InfoPath was unable to add or modify the data connection or data source ...
The namespace http://schemas.microsoft.com/office/infopath/2003/myXSD/2009-08-01T23:09:55 is reserved for nodes created by InfoPath
I need a way to remove these old signature elements.
Please help.
<xsd:element name="signatures1">
<
xsd:complexType> <xsd:sequence>
<
xsd:element ref="my:signatures3"/> </xsd:sequence>
</
xsd:complexType> </xsd:element>
<
xsd:element name="signatures3"> <xsd:complexType>
<
xsd:sequence> <xsd:any minOccurs="0" maxOccurs="unbounded" namespace="http://www.w3.org/2000/09/xmldsig#" processContents="lax"/>
</
xsd:sequence> </xsd:complexType>
</
xsd:element>