The ALAEA will be challenging the Agreement in FWC if they try and lodge it. If I could draw a comparison -
A hospital has two Agreements. One for Nurses and one for doctors. The doctors think that the new people in their profession are not being paid enough and want an increase. To avoid negotiating with the doctors, the hospital creates a new allowance in the nurses Agreement so the new starters are nurses with a doctors allowance.
Same by putting LAMEs in the unlicenced Agreement.