I think you can go either way after a big hack, there's not a huge demand after for ferts.........but, keeping them somewhat stable and responding accordingly is fine also.
I typically add about the same after, never noticed any detrimental effects. I've also dialed it back a little, I guess either way is fine, but you do not avoid algae or reduce fert expense in doing so which the proponents often make as a (false) claim. It does no harm either way, that's the strongest argument in favor of dialing it back or if you lack independence from the ferts, eg CO2/light/maintenance issue.
Still, it's a minor squabbling point, just remember to add enough as the plants fill back in.