I have here two VFP's one for Edit and one for Detail.

On Detail is a button called 'Edit' which opens the Edit page.

On the Edit page is a button called 'Save' and a button 'Cancel'. When i click the Save button, it saves the edited record  and navigates to the Detail page as defined in the save() method, however the Edit button on the Detail page is not displayed. Even the Cancel button navigates to where I was but the Edit button disappears from the Detail Page.

I thik there's some conflict between StandardController and the extension.

Can someone please takle a look and tell me what I doing wrong  .

Thanks.

Detail Page 

<apex:page standardController="Transaction__c" extensions="TransactionsCtrl" id="thePage" >
<apex:pagemessages />
<apex:form id="theForm" >  
     <apex:pageBlock id="detailsPB" title="Details" mode="detail">
          <apex:pageBlockButtons id="detailButtons" location="top" >
          <apex:commandButton id="editBtn" value="Edit" action="{!edit}" />    
          </apex:pageBlockButtons>
<apex:pageBlockSection title=" AUDIT RESEARCH" columns="2" id="pgBlckSct1">
    <apex:outputField id="rescodeFld" value="{!transaction.Research_Code__c}"/>
    <apex:outputField id="mancloseFld" value="{!transaction.Manually_Close_Y_N__c}"  />
</apex:pageBlockSection> 
</apex:pageBlock> 
</apex:form>
</apex:page>



Edit Page 

<apex:page standardController="Transaction__c" extensions="TransactionsCtrl" id="thePage" >
<apex:pagemessages />
<apex:form id="theForm" >  

<apex:pageBlock id="editPB" title="Edit" >
          <apex:pageBlockButtons id="editButtons" location="top" rendered="true">
          <apex:commandButton id="saveBtn" value="Save" action="{!save}" />
          <apex:commandButton id="cancelBtn" value="Cancel" action="{!cancel}" />
          </apex:pageBlockButtons>
<apex:pageBlockSection title="Audit Record" columns="2" id="pgBlckSct1">
<apex:inputField id="statusFld" value="{!transaction.Status__c}" />
<apex:inputField id="empidFld" value="{!transaction.EmplId__c}"  />
</apex:pageBlockSection> 

</apex:pageBlock> 
</apex:form>
</apex:page>


Class

public with sharing class TransactionsCtrl { 
    
    private ApexPages.StandardController stdController  { get; set; }
    public Transaction__c transaction { get; set; }
    
    public TransactionsCtrl(ApexPages.StandardController stdController) {
        
        
      System.debug('is it in the constructor');
      this.stdController = stdController;
      this.transaction = (Transaction__c)this.stdController.getRecord();

        pbatransaction = [SELECT Id, Name
                        FROM Transaction__c 
                                        WHERE Id = :transaction.Id limit 1];   
       }       
  public PageReference edit() {  
    PageReference page = new Pagereference('/apex/Transactions_Edit?Id='+transaction.Id);
        page.setRedirect(true);
        return page;
  }
        
  public PageReference save() {   
            try{
                update this.transaction;
                }catch(exception e){
                }
                PageReference page = new Pagereference('/apex/Transaction_Detail?Id='+transaction.Id);
            page.setRedirect(true);
            return page;
 }
 public Pagereference cancel(){
        PageReference newpage = new Pagereference('/apex/Transaction_Detail?Id='+transaction.Id);
        newpage.setRedirect(true);
        return newpage;
 }
   
}