Try to modify the default settings for those Zones in the Zone Categories Dialog.
Also, you may want to select all Zones using a certain Zone Category, assign to all of them another Zone Category and then assign them the original Zone Category again.
The reason for this is your Zones are already placed and the states of the various parameters are set for each Zone instance. It reads the default parameter states only when you assign to it a different Zone Category. So this is how it will work.
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