XML import can cause duplicate key errors

org.postgresql.util.PSQLException: ERROR: duplicate key value violates unique constraint "auditrecord_pkey"
	at org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:2182)
	at org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:1911)
	at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:338)
	at org.postgresql.jdbc2.AbstractJdbc2Statement.executeBatch(AbstractJdbc2Statement.java:2888)
	at org.apache.tomcat.dbcp.dbcp.DelegatingStatement.executeBatch(DelegatingStatement.java:297)
	at org.apache.tomcat.dbcp.dbcp.DelegatingStatement.executeBatch(DelegatingStatement.java:297)
	at org.apache.tomcat.dbcp.dbcp.DelegatingStatement.executeBatch(DelegatingStatement.java:297)
	at net.sf.hibernate.impl.BatchingBatcher.doExecuteBatch(BatchingBatcher.java:54)
	at net.sf.hibernate.impl.BatcherImpl.executeBatch(BatcherImpl.java:128)
	at net.sf.hibernate.impl.SessionImpl.executeAll(SessionImpl.java:2465)
	at net.sf.hibernate.impl.SessionImpl.execute(SessionImpl.java:2419)
	at net.sf.hibernate.impl.SessionImpl.flush(SessionImpl.java:2288)
	at net.sf.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:61)
	at org.springframework.orm.hibernate.HibernateTransactionManager.doCommit(HibernateTransactionManager.java:510)
	at com.atlassian.confluence.impl.hibernate.ConfluenceHibernateTransactionManager.doCommit(ConfluenceHibernateTransactionManager.java:67)
	at org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java:761)
	at org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:730)
	at sun.reflect.GeneratedMethodAccessor79.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:302)
	at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
	at com.sun.proxy.$Proxy92.commit(Unknown Source)
	at org.springframework.transaction.interceptor.TransactionAspectSupport.commitTransactionAfterReturning(TransactionAspectSupport.java:485)
	at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:291)
	at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
	at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:208)
	at com.sun.proxy.$Proxy175.storeRecord(Unknown Source)
	at com.atlassian.confluence.impl.audit.DefaultAuditManager.storeRecord(DefaultAuditManager.java:34)
	at com.atlassian.confluence.impl.audit.listener.AbstractAuditListener.lambda$save$0(AbstractAuditListener.java:76)
	at com.atlassian.fugue.Option.map(Option.java:272)
	at com.atlassian.confluence.impl.audit.listener.AbstractAuditListener.save(AbstractAuditListener.java:75)
	at com.atlassian.confluence.impl.audit.listener.ImportExportAuditListener.importFinishedEvent(ImportExportAuditListener.java:35)