Doesn't answer your direct question - however I did a practice upgrade to Shared persistence in two steps
The version I was running didn't allow for direct upgrade to shared persistence so first I upgraded to a version that did (ie latest release -1), then performed another upgrade to convert to Shared Persistence (Latest Release).
Also probably doesn't help. In version 3.2 SR2 you go to the hub (not QMC), click on the ... on the top right and then select about and it tells you the version including SR
In 3.0 you can do the same thing in the hub, but need to click on the three horizontal lines on the top left and then about - doesn't say the SR but there is a full version number which I am sure can tie back to SR's if you check the qlik sense download files.