WLP to WLD forces some Fidelity symbols to be changed, but you can't modify a trained network. Unlocking a network loses the weights. 
Is editing the .xml safe? Is there an alternative? These are generally indexes used via GetExternalSymbol.
    
    
        
    
    
        
    
    
        Size:  
    
        Color:  
    
    
 
    
        
     
    
        
    
 
    
    
    
        Yes, editing the XML should be safe. Make sure NL is closed prior to editing - or better shut down WLD.
    
    
        
    
    
        
    
    
        Size:  
    
        Color: