the version of export will have no impact - the Access database file remains the same across all versions for all platforms regardless and this is all that matters to the viewer tool, so that's not a productive avenue.
I'd need to see your backup and/or CSV file to speculate further - not much I can do with "it doesn't work". I just tried some backups I have lying around here and updating the extension and alias via CSV worked ok so presumably something in a name/alias string is likely not being escaped properly (i.e. a special character burning it) or the like but it's hard to say without some more details to work with.
