Currently the only way to pull any reports on a deactivated user is in the filters. Prompts do not 'see' a deactivated user.
This creates a real issue for reassigning work when someone is suddenly gone from the company or when pulling hours reports for time periods where a user previously was at the company.
If there were a checkbox that said "Include Deactivated Users" or something along those lines, that would be perfect!
If you like this idea, there is a very similar one that could also be voted on:
https://support.workfront.com/hc/en-us/community/posts/360001215374-Predictive-Text-For-Deactivated-...