Requisition REST Service allows duplicate nodes

As you can see on the attached image, you will see two sets of duplicated nodes:

1. The node "my-test-router" has been added twice using REST Interface through the command:
curl -v -H 'Content-Type: application/xml' -d @node.xml "http://admin:admin@localhost:8980/opennms/rest/requisitions/Test-01/nodes"

where node.xml contains:
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<node xmlns="http://xmlns.opennms.org/xsd/config/model-import" node-label="my-test-router" foreign-id="20002" building="Test-01">
<interface status="1" snmp-primary="P" ip-addr="11.1.0.254" descr="Fa0/1"/>
<category name="Production"/>
<category name="Routers"/>
</node>

2. The node "testsrv.local" has been added 3 times, by executing the following command:
./provision.pl --username admin --password admin node add Test-01 2003 testsrv.local

This is expected because provision.pl uses the REST interface to manipulate requisitions.

Final comment:
Through WebUI, I can't modify the foreign-id. It always forces me to use the generated one.

The curious thing is that I made a JUnit test to validate the correct implementation of the method "putNode" from Requisition.java, and it works as expected, so if you check the method "addOrReplaceNode" from RequisitionRestService.java, I think the problem could live on getActiveRequisition or m_pendingForeignSourceRepository.save() (but I'm not sure about that).