Unable to set the ID of an instance - codefluent

Question

What is unique about my situation is that the ID's can not be randomly assigned so I set it's value within the instance. I created several instances of an entity using the modeler. Below is the XML created:
<cf:entity name="Test4" namespace="Amikids.TimeTracking" categoryPath="/Amikids.TimeTracking">
<cf:property name="Id" key="true" typeName="int" />
<cf:property name="Name" />
<cf:instance>
<cf:instanceValue name="Id">10</cf:instanceValue>
<cf:instanceValue name="Name">Test 1</cf:instanceValue>
</cf:instance>
<cf:instance>
<cf:instanceValue name="Id">20</cf:instanceValue>
<cf:instanceValue name="Name">Test 2</cf:instanceValue>
</cf:instance>
<cf:instance>
<cf:instanceValue name="Id">30</cf:instanceValue>
<cf:instanceValue name="Name">Test 3</cf:instanceValue>
</cf:instance>
</cf:entity>
There are 2 things that are not working as expected:
The records inserted do not use the ID specificed in the model/xml. Instead they were created incrementally starting at 1:
(The below is displayed in a code snippet only to prevent StackOverflow from reformatting my list so all records appear on one line)
ID Name
1 Test 1
2 Test 2
3 Test 3
When I build the model a second time duplicate records are inserted.
(The below is displayed in a code snippet only to prevent StackOverflow from reformatting my list so all records appear on one line)
ID Name
1 Test 1
2 Test 2
3 Test 3
4 Test 1
5 Test 2
6 Test 3

Answer 1

Although specifying the ID in the instance does not appear to be work, as a simple work around I created the records using code, which allowed me to specify the ID. This has been verified with the following code snippet.
Amikids.TimeTracking.Test4 test4 = new Amikids.TimeTracking.Test4();
test4.Id = 100;
test4.Name = "Test 100";
test4.Save();
test4 = new Amikids.TimeTracking.Test4();
test4.Id = 200;
test4.Name = "Test 200";
test4.Save();