[Dovecot] Dovecot v0.99.13-3 upgrade to 1.0.15-2 ??

[cajun]

I've read some of the mailing lists looking for information on this. 
Thus far, about all I've found is there was a complete rewrite of 
Dovecot some time back.

I'm wondering now is it even possible to use the same mbox's from 
0.99.13-3 with version 1.0.15-2? Is there a procedure documented somewhere?

Any pointers would be much appreciated.

Thanks,
Mike
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