I'm not sure if I got your point, but for me it's gonna be more convenient to just change and encode my desired password into my newer 8900 device after I do the backup.
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9700 Unlocked BES
App:5.0.0.979 Plt:5.1.0.177
8900 Unlocked BIS
App:5.0.0.822 Plt:5.2.0.76
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