Hi Experts!!

Clone functionality is not working as expected :(

Expected requirement is after click of clone i want new row to be added at the last and Sequesnce number is in order.


Issue is once we click on clone its changing the sequence number(along with other data in the row) of source row.
 


Code :
<!-- Action funtion to clone entry -->
        <apex:actionFunction action="{!cloneEntry}" name="cloneEntry1" reRender="pgMsgs,lstproducts" status="pageStatus">
            <apex:param name="entryToClone" value=""/>
        </apex:actionFunction>
<apex:pageBlockTable value="{!lstEntries}"  var="oli" width="80%" id="pbTable" rendered="{!lstEntries.size >0}">          
                <apex:column >
                  <u><a style="cursor: pointer;" onclick="cloneEntry1('{!oli.APT_Sequence_Number__c}');"> <b>Clone</b> </a></u>                 
                </apex:column>
                <apex:column headerValue="Sequence Number">   
                 <b><apex:outputField value="{!oli.APT_Sequence_Number__c}" />  </b>
                </apex:column>
                <!--apex:column value="{!oli.APT_Product__c}" headerValue="Product" /--> 
                <apex:column headerValue="Classification">                
                <apex:inputField value="{!oli.APT_Classification__c}" id="classID" />
                </apex:column>
</apex:pageBlockTable>

public void cloneEntry(){
    
          Integer entryToClone= integer.valueof(Apexpages.currentPage().getParameters().get('entryToClone'));                      
          APT_Opportunity_Product_Line_Item__c opToClone= new APT_Opportunity_Product_Line_Item__c();         
           opToClone= lstEntries[entryToClone];                    
           opToClone.APT_Sequence_Number__c= lstEntries.size();
          lstEntries.add(opToClone);      
         
    }



I have tried multiple scenarios on the method no success.

Please suggest me whats going wrong here.

Thanks in advance.