For resources marked inactive in Clarity, the planned allocations are removed for the period they were active in the project in the Staffing / Team section of projects. This also then impacts the Financial Plan section of the Modern User Experience (UX). It's expected that allocations should still show up until their termination date.
Release : 15.9.2
Component : CLARITY RESOURCE MANAGEMENT
This is due to the availability being deleted for the resource. Since Allocation is calculated based on Availability, if there is no availability for the resource, the allocation is calculated as 0. See Allocation calculation for resources for more details.
Availability is not possible to delete from the Clarity UI, so this can be due to resource adaptor or integration.
The adaptor/integration would need to be updated to make sure it does not blank out / delete resource availability going forward for any termed users.
For detailed information on allocation and availability calculation see: Allocation, %Allocation, and Availability calculation overview