How to keep the content of persistStore after the software upgrade?

I use persistObject to store a variable in the program, once I changed some work and update the new version of the device, I found that the historical data are passed. How to store history data after the software upgrade? my software is auto-start at the start of the unit, in order to update you have to restart the device.

If the size of the object you store changes, and then it gets deleted.

If you change the name of the package where you saved the object, then it will fade.

I usually have with ropes to keep them always upgrades throughout.

Tags: BlackBerry Developers

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