storePage does not handle re-parenting correctly

I had to mothball the Drag & Drop page move implementation in TimTam due to this bug...

Here is a SOAP trace :
we reparent a page from parent id 2 to parent id 4 ,
and instead it is reparented to 0.

moving page Child 21 from parent 2 to parent 4
[SOAP] request to http://MOOKY:8080/rpc/soap/confluenceservice-v1
<?xml version='1.0' encoding='UTF-8'?>
<soap:Envelope xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xmlns:xsd='http://www.w3.org/2001/XMLSchema' xmlns:soap='http://schemas.xmlsoap.org/soap/envelope/' xmlns:soapenc='http://schemas.xmlsoap.org/soap/encoding/' xmlns:n='x' xmlns:n5='http://www.atlassian.com/package/com.atlassian.confluence.rpc.soap.beans/'>
<soap:Body soap:encodingStyle='http://schemas.xmlsoap.org/soap/encoding/'>
<n:storePage>
<arg0 xsi:type='xsd:string'>xq7m3dGnme</arg0>
<arg1 xsi:type='n5:RemotePage'>
<id xsi:type='xsd:long'>5</id>
<parentId xsi:type='xsd:long'>4</parentId>
<space xsi:type='xsd:string'>OUT</space>
<title xsi:type='xsd:string'>Child 21</title>
<url xsi:type='xsd:string'>http://localhost:8080/display/OUT/Child+21</url>
<created xsi:type='xsd:dateTime'>2004-04-13T21:54:32.114Z</created>
<modified xsi:type='xsd:dateTime'>2004-04-14T00:07:47.130Z</modified>
<creator xsi:type='xsd:string'>admin</creator>
<modifier xsi:type='xsd:string'>admin</modifier>
<content xsi:type='xsd:string'>Created by admin
On Tue Apr 13 22:54:32 BST 2004
Using TimTam</content>
<version xsi:type='xsd:int'>19</version>
<homePage xsi:type='xsd:boolean'>false</homePage>
</arg1>
</n:storePage>
</soap:Body>
</soap:Envelope>

[HTTP] outbound request to tcp://MOOKY:8080
POST /rpc/soap/confluenceservice-v1 HTTP/1.1
Host: MOOKY:8080
Connection: Keep-Alive
User-Agent: TME-GLUE/4.1.2
SOAPAction: "storePage"
Content-Type: text/xml; charset=UTF-8
Content-Length: 1253
Cookie: JSESSIONID=36489A3597A5E6F8773CDE614C12D9CC

[HTTP] <?xml version='1.0' encoding='UTF-8'?>
<soap:Envelope xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xmlns:xsd='http://www.w3.org/2001/XMLSchema' xmlns:soap='http://schemas.xmlsoap.org/soap/envelope/' xmlns:soapenc='http://schemas.xmlsoap.org/soap/encoding/' xmlns:n='x' xmlns:n5='http://www.atlassian.com/package/com.atlassian.confluence.rpc.soap.beans/'><soap:Body soap:encodingStyle='http://schemas.xmlsoap.org/soap/encoding/'><n:storePage><arg0 xsi:type='xsd:string'>xq7m3dGnme</arg0><arg1 xsi:type='n5:RemotePage'><id xsi:type='xsd:long'>5</id><parentId xsi:type='xsd:long'>4</parentId><space xsi:type='xsd:string'>OUT</space><title xsi:type='xsd:string'>Child 21</title><url xsi:type='xsd:string'>http://localhost:8080/display/OUT/Child+21</url><created xsi:type='xsd:dateTime'>2004-04-13T21:54:32.114Z</created><modified xsi:type='xsd:dateTime'>2004-04-14T00:07:47.130Z</modified><creator xsi:type='xsd:string'>admin</creator><modifier xsi:type='xsd:string'>admin</modifier><content xsi:type='xsd:string'>Created by admin
On Tue Apr 13 22:54:32 BST 2004
Using TimTam</content><version xsi:type='xsd:int'>19</version><homePage xsi:type='xsd:boolean'>false</homePage></arg1></n:storePage></soap:Body></soap:Envelope>
[HTTP] inbound response from tcp://MOOKY:8080
HTTP/1.1 200 OK
Date: Wed, 14 Apr 2004 00:12:25 GMT
Server: TME-GLUE/5.0
Content-Type: text/xml;charset=UTF-8
Content-Length: 1228
Server: Apache-Coyote/1.1

[HTTP] <?xml version='1.0' encoding='UTF-8'?>
<soap:Envelope xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xmlns:xsd='http://www.w3.org/2001/XMLSchema' xmlns:soap='http://schemas.xmlsoap.org/soap/envelope/' xmlns:soapenc='http://schemas.xmlsoap.org/soap/encoding/' xmlns:n4='http://www.atlassian.com/package/com.atlassian.confluence.rpc.soap.beans/'><soap:Body soap:encodingStyle='http://schemas.xmlsoap.org/soap/encoding/'><n:storePageResponse xmlns:n='x'><Result xsi:type='n4:RemotePage'><id xsi:type='xsd:long'>5</id><parentId xsi:type='xsd:long'>0</parentId><space xsi:type='xsd:string'>OUT</space><title xsi:type='xsd:string'>Child 21</title><url xsi:type='xsd:string'>http://localhost:8080/display/OUT/Child+21</url><created xsi:type='xsd:dateTime'>2004-04-13T21:54:32.114Z</created><modified xsi:type='xsd:dateTime'>2004-04-14T00:12:25.208Z</modified><creator xsi:type='xsd:string'>admin</creator><modifier xsi:type='xsd:string'>admin</modifier><content xsi:type='xsd:string'>Created by admin
On Tue Apr 13 22:54:32 BST 2004
Using TimTam</content><version xsi:type='xsd:int'>20</version><homePage xsi:type='xsd:boolean'>false</homePage></Result></n:storePageResponse></soap:Body></soap:Envelope>
[SOAP] response from http://MOOKY:8080/rpc/soap/confluenceservice-v1
<?xml version='1.0' encoding='UTF-8'?>

<soap:Envelope xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xmlns:xsd='http://www.w3.org/2001/XMLSchema' xmlns:soap='http://schemas.xmlsoap.org/soap/envelope/' xmlns:soapenc='http://schemas.xmlsoap.org/soap/encoding/' xmlns:n4='http://www.atlassian.com/package/com.atlassian.confluence.rpc.soap.beans/'>
<soap:Body soap:encodingStyle='http://schemas.xmlsoap.org/soap/encoding/'>
<n:storePageResponse xmlns:n='x'>
<Result xsi:type='n4:RemotePage'>
<id xsi:type='xsd:long'>5</id>
<parentId xsi:type='xsd:long'>0</parentId>
<space xsi:type='xsd:string'>OUT</space>
<title xsi:type='xsd:string'>Child 21</title>
<url xsi:type='xsd:string'>http://localhost:8080/display/OUT/Child+21</url>
<created xsi:type='xsd:dateTime'>2004-04-13T21:54:32.114Z</created>
<modified xsi:type='xsd:dateTime'>2004-04-14T00:12:25.208Z</modified>
<creator xsi:type='xsd:string'>admin</creator>
<modifier xsi:type='xsd:string'>admin</modifier>
<content xsi:type='xsd:string'>Created by admin
On Tue Apr 13 22:54:32 BST 2004
Using TimTam</content>
<version xsi:type='xsd:int'>20</version>
<homePage xsi:type='xsd:boolean'>false</homePage>
</Result>
</n:storePageResponse>
</soap:Body>
</soap:Envelope>

expected parent 4 actual parent 0

Here are the page summaries of all pages in the space:

SOAP] response from http://MOOKY:8080/rpc/soap/confluenceservice-v1
<?xml version='1.0' encoding='UTF-8'?>

<soap:Envelope xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xmlns:xsd='http://www.w3.org/2001/XMLSchema' xmlns:soap='http://schemas.xmlsoap.org/soap/envelope/' xmlns:soapenc='http://schemas.xmlsoap.org/soap/encoding/' xmlns:n4='http://www.atlassian.com/package/com.atlassian.confluence.rpc.soap.beans/'>
<soap:Body soap:encodingStyle='http://schemas.xmlsoap.org/soap/encoding/'>
<n:getPagesResponse xmlns:n='x'>
<Result soapenc:arrayType='n4:RemotePageSummary[5]'>
<i>
<id xsi:type='xsd:long'>2</id>
<parentId xsi:type='xsd:long'>0</parentId>
<space xsi:type='xsd:string'>OUT</space>
<title xsi:type='xsd:string'>Home</title>
<url xsi:type='xsd:string'>http://localhost:8080/display/OUT/Home</url>
</i>
<i>
<id xsi:type='xsd:long'>3</id>
<parentId xsi:type='xsd:long'>2</parentId>
<space xsi:type='xsd:string'>OUT</space>
<title xsi:type='xsd:string'>Child1</title>
<url xsi:type='xsd:string'>http://localhost:8080/display/OUT/Child1</url>
</i>
<i>
<id xsi:type='xsd:long'>4</id>
<parentId xsi:type='xsd:long'>2</parentId>
<space xsi:type='xsd:string'>OUT</space>
<title xsi:type='xsd:string'>Child2</title>
<url xsi:type='xsd:string'>http://localhost:8080/display/OUT/Child2</url>
</i>
<i>
<id xsi:type='xsd:long'>5</id>
<parentId xsi:type='xsd:long'>0</parentId>
<space xsi:type='xsd:string'>OUT</space>
<title xsi:type='xsd:string'>Child 21</title>
<url xsi:type='xsd:string'>http://localhost:8080/display/OUT/Child+21</url>
</i>
<i>
<id xsi:type='xsd:long'>6</id>
<parentId xsi:type='xsd:long'>3</parentId>
<space xsi:type='xsd:string'>OUT</space>
<title xsi:type='xsd:string'>Child12</title>
<url xsi:type='xsd:string'>http://localhost:8080/display/OUT/Child12</url>
</i>
</Result>
</n:getPagesResponse>
</soap:Body>
</soap:Envelope>