Could installing the iOS14/Big Sur betas cause subtle and permanent data corruption?

App & System Services Core OS
DropZap OP
Created Jun ’20
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If an app's data format changes in a future beta (e.g., Mail), could data corruption occur that is hard to detect?

And if so, could this data corruption spread across devices via iCloud — even to devices not running beta software?

And so this data corruption could become permanent?
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VoDoAir2013 OP
Jun ’20
I think yes. I disabled iCloud sync on Catalina and allowed only Safari to sync, just in case. Then I upgraded. I now use iCloud on web.
I login to Music and no problem there.
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Could installing the iOS14/Big Sur betas cause subtle and permanent data corruption?
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