CA PPM: Why do allocations and availability change when updating the calendar for a resource?

Document ID : KB000102782
Last Modified Date : 28/06/2018
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Release: 14.4 OS: Windows Recent changes to environment: No Production or Test: Production Description: When updating the calendar the allocation is changing the allocation and availability for the month.
This is working as designed and as documented.  When a calendar entry is changed for a resource, the allocations and availability will change as well.  

For example, if you mark a day on a resource's calendar as "non-working" - then the hours for that day should be subtracted from the allocation/availability for that resource in the team detail view.