Correlation expression when using an aggregator with split

Issue

If the route gets two exchanges with the same correlation ID at the same time then it doesn't function as intend and messages get mixed up.

eg.

      <split strategyRef="msgAggregationStrategy">
        <xquery type="java.util.Collection" >somes-values(//name:foo/name:ID/text())</xquery>
        <log message="ID: ${body}" />
        <inOut uri="activemq:bar"/>
      </split>