Partial reloads can be performed in Qlik Sense via the in-app Button object. More information is available under Partial Reload - Qlik Sense on Windows.
For older versions of Qlik Sense, a third party extension is available which can be used to achieve Partial Reload. Note that this third party extension is not covered by Qlik Support. Please contact the extension vendor for assistance.
Download: Qlik Branch Project: Qlik Sense Reload Button
Or: GitHub repository for the Qlik Sense Reload Button.
Documentation on how to load new and updated records with incremental load can be found here: Loading new and updated records with incremental load
