the formats are not included in the menu. This means that you might need
to click "Show in export menu" in Preferences > File Formats for your
customized file formats if you want them to appear in the menu.
+Customized formats imported from a previous configuration are handled
+by the prefs2prefs script, and should appear in the menu as before.
Note, though, that you still can export to any possible format via
File > Export > More Formats and Options ...