<?xml version="1.0"?>
<classes>
<class name="SequenceFeature" is-interface="true">
  <attribute name="score" type="java.lang.String"/>
  <attribute name="scoreType" type="java.lang.String"/>
</class>
<class name="PCRProduct" extends="Region" is-interface="true">
  <attribute name="promoter" type="java.lang.Boolean"/>
  <reference name="tilingPathSpan" referenced-type="TilingPathSpan" reverse-reference="pcrProducts"/>
  <collection name="primers" referenced-type="Primer" reverse-reference="pcrProduct"/>
</class>
<class name="Primer" is-interface="true">
  <reference name="pcrProduct" referenced-type="PCRProduct" reverse-reference="primers"/>
</class>
<class name="TilingPathSpan" extends="Region" is-interface="true">
  <collection name="pcrProducts" referenced-type="PCRProduct" reverse-reference="tilingPathSpan"/>
</class>
</classes>

<?xml version="1.0"?>
<classes>
<class name="PCRProduct" extends="Region" is-interface="true">
  <attribute name="promoter" type="java.lang.Boolean"/>
  <reference name="tilingPathSpan" referenced-type="TilingPathSpan" reverse-reference="pcrProducts"/>
  <collection name="primers" referenced-type="Primer" reverse-reference="pcrProduct"/>
</class>
<class name="Primer" is-interface="true">
  <reference name="pcrProduct" referenced-type="PCRProduct" reverse-reference="primers"/>
</class>
<class name="TilingPathSpan" extends="Region" is-interface="true">
  <collection name="pcrProducts" referenced-type="PCRProduct" reverse-reference="tilingPathSpan"/>
</class>
</classes>

Remove erroneous score and scoreType.
Remove erroneous score and scoreType.

