Is Customer Pricing Profile required or can it be defaulted?

Summary:

Pricing segment is based on Customer Value:

Then Customer Pricing Profile contains Customer Value = Low:

Is there a way to default this combination of Pricing Segment and Customer Pricing Profile without having to update each Customer in the Manage Customer Pricing Profiles screen?

If it cannot be defaulted, how can we update all customers at once and what is the field / attribute to update with value = Low in the Customer profile?

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25C

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