Sure it is an alpha version, so, it is surprising to lose those personnal sources of news, but not unfair.
And now the problem is gone…

Still, I agree with what has been said :

— Is there a way to smoothly export those feeds in order to back them up ?
— where are those feeds internally stored ? Because I see a bookmark file, and an history file, but nothing that seems to explicitly relate to the personnal news.
— Are those feeds synced ? They are not in list of items we can synced, but maybe they are under another category, if that is the case, why not create a personnal news category to synced ?

If someone knows…