@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
-<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" attributeFormDefault="unqualified" elementFormDefault="qualified" version="1.2; August 5, 2019">
+<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" attributeFormDefault="unqualified" elementFormDefault="qualified" version="1.1; April 3, 2019">
   <xs:element name="ClinVarVariationRelease" type="ReleaseType">
     <xs:annotation>
       <xs:documentation>The element to group each VariationArchive element in the release</xs:documentation>
@@ -420,8 +420,7 @@
       <xs:element maxOccurs="unbounded" minOccurs="0" name="Comment" type="typeComment"/>
     </xs:sequence>
     <xs:attribute name="VariationID" type="xs:int" use="required"/>
-    <xs:attribute name="NumberOfCopies" type="xs:int" use="optional"/>
-    <xs:attribute name="NumberOfChromosomes" type="xs:positiveInteger" use="optional"/>
+    <xs:attribute name="NumberOfCopies" type="xs:int" use="required"/>
   </xs:complexType>
   <xs:complexType name="typeHaplotypeSCV">
     <xs:sequence>
@@ -452,8 +451,7 @@
       <xs:element maxOccurs="unbounded" minOccurs="0" name="AttributeSet" type="typeAttributeSet"/>
     </xs:sequence>
     <xs:attribute name="VariationID" type="xs:int" use="optional"/>
-    <xs:attribute name="NumberOfCopies" type="xs:int" use="optional"/>
-    <xs:attribute name="NumberOfChromosomes" type="xs:positiveInteger" use="optional"/>
+    <xs:attribute default="1" name="NumberOfCopies" type="xs:int"/>
   </xs:complexType>
   <xs:complexType name="typeAttribute">
     <xs:annotation>