Question on 9.0 beta iCloud Syncing

[owenzhao]

Currently I use 8.x with .updates to sync with iCloud manually. However, I find that when syncing with iCloud, it is better to use updates with initial: Bool to false. Or iCloud value will be erased easily by initial value that a new device's newly installed app.

So my question is, is the iCloud Syncing can ignore the initial value by default?