Hi,
I have a similar problem I upgrade the Polls app from the version 5.4.3 to the 6.3.0 and all the polls are gone.
First I tried with the command: polls:db:rebuild but it didn’t change anything.
I also uninstalled and installed the app and it didn’t help either.
Does anyone have any idea how to get the settings back?
I have a backup of the old database.