Update from V19 to V22?

Is it safe too upgrade straight from version 19 to version 22? I have left my installation a while. (its still rock solid though).
Also, what is the recommended form of backup to use prior to upgrade? Thank you.

Hi, Baldwin! Yes, it should be safe for you to upgrade directly from v19 to v22. It is absolutely a good idea to make a backup of both your database and all your files though – we recommend using mysqldump to backup your database and rsync for your files. Hope this helps!

Thank you!