PowerBI Report for Email Statistics - Not Updating User Departments.

Good afternoon,

First of all, I am a novice PowerBI user and have been tasked to create a PowerBI report for user/department email statistics.

I've used the pre-built Microsoft 365 Usage App/report and modifying it to show the statistics of user emails, which seesm to be working fine.
However, it is not updating the users' departments, even though they have been updated on-premises AD > Azure Entra ID user properties updated and are showing the correct departments.

Any ideas as to why it isn't updating?

Thanks in advance!