Selected DB called "testing" and uploaded a replacement file.
Got two lines of info in red. The first one said "GEDCOM of this name has already been imported"
Since to me a GEDCOM is a file, not a database, that slowed me down a little to think about it.
But also, these two messages had line wrap disabled, so you have to scroll a long way horizontally to do that.
If you don't scroll to the end, you won't see that you have to make two menu choices--the menus are forced to the far right.