Converting passwords
During conversion, passwords are converted into accounts in FileMaker Pro 10. There are two common password conversion issues:
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For each converted account, both the account name and the password in the converted file are initially set to the password from the original file, which makes all passwords visible to anyone who has Full Access privileges. For security reasons, you should either change each account name so that it no longer matches its password, or change each password so that it no longer matches its account name. (You could also set an option for each account to require a password change by the user upon the next login.)
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Passwords in FileMaker Pro 10 are case-sensitive. Make sure you enter your password exactly as it was created in a previous version of FileMaker Pro.
Related topics 
Solving basic conversion problems