Hello Deepak ,
I tried to reproduce your issue but its not coming for me but if you are facing so I am come up with the solution which I prefer Here I am Attached URL as well as OML(used BACK with Logic Button)
https://akshayproject.outsystemscloud.com/PreviewInDevices/?IsMobilePreview=True&DeviceName=Smartphone&URL=/Retrivedataback/Screen1?_ts=637828814051292778
Consider two screen screen 1 (home), screen 2
give input parameter as text to both screen
what ever you are passing data from one screen to another pass with serialize and On initialize of screen desterilize particular data (if you are having more screen than better you can save those data in client variable also )
just check the logic
one more thing instead of using previous screen you can give direct screen is also work in some case.
hope this will helps you.
Thanks and Regards,
Akshay Deshpande