[vchkpw] migration from 4.9 to 5.4+mysql

[Eduardo Cortés]

Hi all,
I want to migrate some domains from vpopmail 4.9.10 (with cdb) to latest 5.4 
with mysql. On 5.2 versions, crypt passwords from 4.9 are valid on new 
installations with md5, but on mysql it seems to fail (I has replaced 
pw_passwd field with the encrypted password from vpasswd file and it fail to 
auth), how can I migrate passwords from 4.9 to mysql? All passwords are  
encrypted, any solution?
Regards,
Eduardo