Hello, i have a rerender setup on the miiHomeLoan__Financier__c field, which will make the miiHomeLoan__Loan_Product__c field (section) display. It works on a new page, and i can select a value (its a class calling on another object, see class), however when i change it back to "- Select Financier -" (which has/should have a null value), the page does not rerender and remove the section id="loanproduct"

Any ideas?

Class

public class FunderList {

    private miiHomeLoan__Loan_Split__c loansplit;
    public FunderList(ApexPages.StandardController controller) {
    this.loansplit = (miiHomeLoan__Loan_Split__c)controller.getRecord();
    }
    public List <SelectOption> getFunder {
    Get{
    List <SelectOption> funder = new List <SelectOption>();
    
    funder.add(new selectOption('','- Select Financier -'));
    for( miiHomeLoan__Financier__c fu: [Select Name FROM miiHomeLoan__Financier__c WHERE miiHomeLoan__Active__c = TRUE ]){
        funder.add(new selectOption(fu.id, fu.Name));
    }
    return funder;
    }
    Set;
    }
    }

VF

<apex:page showHeader="true" standardController="miiHomeLoan__Loan_Split__c" extensions="FunderList" id="thePage">
    <apex:form id="theForm">
      <apex:sectionHeader title="Loan Split" subtitle="New Loan Split"/>  
        <apex:pageBlock title="Loan Split Edit">
            <apex:pageMessages />
            <apex:pageBlockButtons >
                <apex:commandButton action="{!save}" value="Save"/>
                <apex:commandButton action="{!cancel}" value="Cancel"/>
            </apex:pageBlockButtons>
               <apex:pageBlockSection title="Information" columns="2" collapsible="true">
                   <apex:inputField value="{!miiHomeLoan__Loan_Split__c.miiHomeLoan__Loan_Split_Amount_Dollars__c}" required="true" />
                   <apex:inputField value="{!miiHomeLoan__Loan_Split__c.miiHomeLoan__Loan_Application__c}" required="true" />                   
                   
                   <apex:pageblockSectionItem >
                   <apex:outputLabel value="Financier"/>
                   <apex:actionRegion >
                   <apex:selectList id="funder" value="{!miiHomeLoan__Loan_Split__c.miiHomeLoan__Financier__c}" size="1" title="Financier" required="true" >
                   <apex:selectOptions value="{!getFunder}"/>
                       <apex:actionSupport event="onchange" status="StatusChange" rerender="loanproduct"/>
                   </apex:selectList>
                   <apex:actionStatus startText="Refreshing..." id="StatusChange"/>
                   </apex:actionRegion>
                   </apex:pageblockSectionItem>
                   
                   <apex:outputPanel id="loanproduct">
                   <apex:pageblockSectionItem >
                   <apex:inputField value="{!miiHomeLoan__Loan_Split__c.miiHomeLoan__Loan_Product__c}" required="true" />
                   </apex:pageblockSectionItem>
                   </apex:outputPanel>
                   
                   <apex:inputField value="{!miiHomeLoan__Loan_Split__c.miiHomeLoan__Repay_Type__c}" required="true" />
                   <apex:inputField value="{!miiHomeLoan__Loan_Split__c.miiHomeLoan__Account_Number__c}" required="false" />  
                   <apex:inputField value="{!miiHomeLoan__Loan_Split__c.Purpose__c}" required="true" /> 
                   <apex:inputField value="{!miiHomeLoan__Loan_Split__c.miiHomeLoan__Financier_Split_ID__c}" required="false" /> 
                   <apex:inputTextarea cols="40" value="{!miiHomeLoan__Loan_Split__c.Loan_Purpose_Note__c}" required="false" /> 
                   <apex:inputTextarea cols="40" value="{!miiHomeLoan__Loan_Split__c.Repayment_to_Come_From__c}" required="false" />                                      
                   <apex:inputField value="{!miiHomeLoan__Loan_Split__c.miiHomeLoan__Loan_Split_Status__c}" required="true" /> 
                   <apex:inputField value="{!miiHomeLoan__Loan_Split__c.miiHomeLoan__Deduct_Term__c}" required="false" />                                
               </apex:pageBlockSection>                                                                                                                         
        </apex:pageBlock>
    </apex:form>    
</apex:page>