: It is a best practice to complete a project in the version it was started in. Upgrading mid-edit can lead to broken plugins, missing effects, or slight changes in how tools like Lumetri Color render your footage.
Due to licensing changes (notably regarding Dolby audio), versions like CC 2014 through CC 2017.1.2 are generally no longer available via official Adobe downloads. Adobe officially supports the current plus one previous version . Why Use an Older Version? adobe premiere pro old version
If you have an active Creative Cloud subscription, you can typically access the current version plus one or two previous major releases directly from the desktop app. : It is a best practice to complete
: Launch the Creative Cloud desktop application . adobe premiere pro old version