I've got a 2009 Mini running El Capitan (the latest MacOS it will support) with MS Office 2011. Recently purchased a MacBook Air, running Mojave, and plan to keep both for a while. I use DropBox to synch files between the two. Many apps (such as Reunion and FileMaker Pro), whether they need different versions for each MacOS or not, accept the same data files, so I can synch the files both ways. If I install Office 2019 on the Mojave , will it work non-destructively with the original files ?