The fuel filter isn't included in the servicing schedule
Probably because the factory knew once it's shoved under the car in a such a stupid place, it's there for good
But you're right, soak the bundy fittings with penetrating oil before attempting to unclip them. I've seen people force them off, which leaves the guts of the fitting on the filter, resulting in a new pipe(s) being needed.....which is the length of the car and major ££££s