H1B transfer or not has nothing to do with 485. Pending 484 gives you right to stay in US until adjudicated. Your question is unclear if you are still working with your current employer on H1B. As per popular opinion, even if you enter US with AP, as long as you keep working with your current employer (who sponsored your H1B) on H1B and not use EAD with your HR, you are still considered in H1B category and not in parole status. Check with your lawyer on that. Assuming the above to be true, you can transfer your H1B to your new employer.