those who cleared last year gpat 2019, if they give gpat 2020 and if they do not qualify which scorecard will be accepted - qualified one or the recent one?
The recent scorescheet will only be considered. That is 2020 gpat score sheet will only be relevant for your admission to colleges.
As of now what I can tell you is that if you are preparing and aiming to crack GPat 2020, then stay positive as of now and don't think such negative things as it will bring your morale down and also waste your studies time.
So best wishes. Thank you.