Service request rule category-queue not working

Summary:

Hi all,

I set as Manage service assignment rules> Rule sets 'HR Help Desk Request Queueing Rules' this rule so that every time someone opens an SR with a certain category it goes automatically to a certain queue:

This rule seems only to work when I run the process

'Service Request Queue Assignment' entering the parameters you shared:

However, this process fixes the SRs opened retroactively without working on the ones I open after its launch.

Is it necessary then to schedule it with a certain frequency? If yes, which one? Am I missing something?

Thank you very much,