Change Security Profiles is 'Greyed out'

Hi Forum,

Hoping to get some technical help please.

On my FGT-40F i have quite a lot of policies configured and i want to 'Change Security Profiles' but it is greyed out so now i have to edit each Firewall Policy individually. I should be able to select multiple Firewall Policies and then click on 'Change Security Profiles ' but something is causing that option to be greyed out so hoping anyone might have any idea why?