Screen Flows Not Working Correctly

We are using OPM 10.2.
We decided to extensively use screen flows because we had a requirement wherein the user should be allowed to navigate back and forth on the OPA screens.
If we do not use screen flows the following screnario occurs..
We've a rule which is satisfied if all attributes on Screen1 Screen2 and Screen3 are known.
User enters details on Screen1 and Screen2, but he wants to navigate back from Screen3 to Screen1, he reaches Screen1 by hitting browser Back twice, but when he again hits
Submit on Screen1 he's directly navigated to Screen3 skipping Screen2. This is because all attributes on Screen2 had been collected in first iteration.
We used screen flows expecting that this would force the required screen order, but it is also behaving in similar way.
Does it have any thing to do with the way the rules are written.
Thanks In Advance.

Hi user1002818,
The reason that the screens aren't being displayed again is because then engine has the data which was collected on those screens - from a rules point of view there is no need to display them again. To enforce a particular forward/backwards flow we have Interview Flows, which it sounds like you've already started to use.
One of the reasons that OWD doesn't support an OOTB 'back' button is because navigating backwards in a session has the possibility of invalidating data 'upstream' in the interview. e.g. I fill in some personal details on one screen, on screen 2 I say that I have children, and on screen 3 I create children instances. When I navigate back and change my previous answer to 'I do not have children' what happens to the children instances which I've created? Semantically my session is now invalid. It's a choice left up to the customer/project as to how they want to manage their session validity (delete the data, show the data and ask the customer if it's valid or just do nothing).
One way to achieve what you want to do would be to author rules as normal and manage the screen flows via a simple push/pop stack implementation which keeps track of screen submissions and data entered on those screens. This will give you the flexibility to both delete invalid data or display it to the user again as you wish
Could you tell me which project it is that you're working on at the moment please? I'm working on large UK project at the moment and the OPA team is providing support to achieve something very similar.

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