Biztalk bug? XSD chokes when using hyphen or period in element name when global (referenced)
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Here is some code of an XSD that is VALID in XML Spy but chokes on the referenced elements using a period or hyphen.

<?xml version="1.0" encoding="UTF-8"?>
<!-- edited with XMLSpy v2012 rel. 2 (x64) (http://www.altova.com) by ZiggyDude (PA DPW-BIS) -->
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified" attributeFormDefault="unqualified">
	<xs:element name="DotNetRestrictions">
		<xs:complexType>
			<xs:choice>
				<xs:element name="Valid">
					<xs:complexType>
						<xs:sequence>
							<xs:element name="Embedded-Hyphen"/>
							<xs:element name="Embedded.Period"/>
						</xs:sequence>
					</xs:complexType>
				</xs:element>
				<xs:element name="Invalid">
					<xs:complexType>
						<xs:sequence>
							<xs:element ref="Embedded-Hyphen"/>
							<xs:element ref="Embedded.Period"/>
						</xs:sequence>
					</xs:complexType>
				</xs:element>
			</xs:choice>
		</xs:complexType>
	</xs:element>
	<xs:element name="Embedded.Period"/>
	<xs:element name="Embedded-Hyphen"/>
</xs:schema>