Hi,
I have an action in center center from an App (AppTask).
In here I have a gridtable that user updates. Changes is visible when changes are made but when user clicks on save button and moved to a different action. The changes are lost when user navigates back to original action

Need to understand the App-schema design, parameters (IN/OUT). Just to confirm you are unable to see the saved data when you open the completed task from the Completed section in Action Center?
The grid table is connected to the parameter dtpromotions. Originally, it was set to ‘in’ only but I have updated it to ‘in/out’ and the problem still persists.
Please reach out to me on this email and we can have a call to go through the scenario to help you resolve this faster.
Kind Regards,
Harit