ASIC Form 6010 to Deregister Company - Paper Lodgement Only

When can prepare a form 6010 in CAS, but it cannot be lodged as it says ‘Paper Lodgement only’, however this form can be lodged electronically through the ASIC portal.

We use CAS to produce corresponding documents eg minutes but then need to lodge through portal.

Why can't we prepare and lodge everything via CAS.?

Thanks