Qlik Sense upgrade from September 2017 toJune 2020
Planning to upgrade Qlik sense from September 2017(11.14.3) to June 2020(13.82.4). To prevent any unpleasant surprises what is a key points I should know and what preparation have to do.? Also can I upgrade direct from 2017 to 2020 ? Or have to do this release-by-release.?