How to synchronize data in a native mobile page?

Hi   I have a native page with a List view1 and Xpath as datasource to retrieve Categories associated to the context object. With an On Change which relates the list view item to the context object (category) Below ListView1 i have another ListView2 with a Microflow as a Datasource loading the products of the chosen Category from Listview 1.When I delete a product, I'll see this product still in the mobile app, while I would expect that the datasource would retrieve the actual data.Once I add a synchronize everything activity the listview2 shows the actual data. But syncing everything seems an overkill and potential performance killer to me if the backend gets a lot of similar requests to handle. What is the best practice to load the actual data just in time per list view instead of everything?  
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