Can an onshore student visa holder, who has lodged an onshore partner visa application, have their student visa voluntarily cancelled, to allow the BVA associated with their partner visa application to come into effect so they can cease their studies?
Answer: No
If the student visa is cancelled, even voluntarily, all bridging visas including the BVA associated with the partner application will cease. The student visa holder will become unlawful and will only be eligible to apply for a BVE with all the restrictions that can entail.
Extract from : MIA