I imported all my clients from my old magento, however I could not get the password, I saw in some places that I should get the passwordhash that would be the password cryptographed with the salt, I do not want to know the password of the user, I simply want to keep the password how could I do this? I’m importing from magento 1.4 to magento 1.9

How do I get

require_once('app/Mage.php'); Mage::app(0);          $  id = 64995;         $  usuario_loaded = Mage::getModel('customer/customer')->load($  id);         $  name = $  usuario_loaded->getName();         $  hash = $  usuario_loaded->getPasswordHash();          print_r($  name.' '.$  hash);          RESULT: Gustavo Souza f125f7e9cad50ea2dabf77673d555771a0230e218a6890e048b0a895ce532507:cM7m7Ay6x40UEGNX5t5aq8xFRJacXQne 

How do I insert

require_once('app/Mage.php'); Mage::app(0);          $  id = 64995;         $  hash = 'f125f7e9cad50ea2dabf77673d555771a0230e218a6890e048b0a895ce532507:cM7m7Ay6x40UEGNX5t5aq8xFRJacXQne';         $  usuario_loaded = Mage::getModel('customer/customer')->load($  id);         $  name = $  usuario_loaded->getName();         $  usuario_loaded->setPasswordHash($  hash);         $  usuario_loaded->save(); 

This would be my user, in the old magento I soon with the same password, but in the new magento I try to use the same password and I can not. Would it have something with the old encryption key of the other magento?