I have a requirement in which on click of a button a screen flow needs to be launched, the first screen in the screenflow should display values in a page list with checkbox enabled against each value in list for user selection. This list is populated in an activity configured as a pre processing activity of the flow action configured on the first assignment shape in the screen flow.

Issue: When user selects few values from the page list(using checkbox) populated in screen 1 and clicks on Next Button(Default Flow Action button) and again navigates to screen 1 using Previous Button (Default Flow Action button), the pre processing activity is again being executed and as a result the page list is again formed and the previously slected checkboxes are refreshed.

As a work around, calling the activity in a utility shape placed before the first assignment resolved the issue.

Can Work-PerformPreProcessing be restricted when flow action section is launched using Previous Button or Next Button while in a screen flow?