> Then a newer version of the app is released.  
> What strategy should I follow so
> that the data is not lost when the user 
> replaces the app with the new version?

Todd, I don't think the databases of an application
will get deleted if you replace the application
with a new version during hotsync.  

Of course, you will need to make sure your new app
version can understand the data format of the old
application.

You may need to store a version number with the 
databases (preferences) and check at startup of
your application if there is a need to adjust the
format.  There was recently a thread discussing this
in the conduit forum:

http://www.escribe.com/computing/pcpcdf/m8376.html

Hope this helps,

Oliver


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