Can I submit 2 EOIs for SC 189

I have already submitted 1 EOI for SC 189 (ICT BA -261111) on July 2019 where I am the primary applicant and my spouse is the secondary applicant (Point - 75). Since my wife has now completed her PhD in WA this Jan 2020. So, we are planning to submit another EOI as (Geotechnical Engineer -233212) where she will be the primary applicant and I will be secondary (Points - 75). Can we submit 2 EOIs ?? If so, will it override the other or both will be rejected ?? Any inputs will be highly appreciable.