Some apps, like evince and totem, have been replaced. Will an old installation apply these changes upon update or do I need to manually install the new apps and remove the old ones?

Sorry for the bad resolution. I have just updated it.

Sorry. I thought the URL was actually added to the post but it was not. The source is here: https://cemas.io/publikationen/q-vadis-zur-verbreitung-von-qanon-im-deutschsprachigen-raum/CeMAS_Q_Vadis_Zur_Verbreitung_von_QAnon_im_deutschsprachigen_Raum.pdf