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…

Anyway I've updated - issue is still there - no personal RSS feeds.

Your answer is in today's post about ddveloper build release on Desktop Team blog.

why do I need to care about backups if they must be back'ed up and sync'ed via opera servers

Because you are running an alpha version of a software? And also because a sync service is not a backup service?

could somebody from opera confirm that you have bug report for that?

Yes, they have. It was already mentioned in the blog.

• is it the one we're talking about?

Most probably.

Should I forget about opera RSS feeds and start using plugins? Or how it's possible to export/create local copy of these rss feeds - If I need to re-create them - I don't want to repeat this "Failure way" and re-create one-by-one

I can confirm. Had over a hundred rss feeds synced up. All gone now in the latest update. It's a good thing I have an external rss feed setup as a backup and because it's more comfortable to use or I'd have lost all my sources.

I don't want to loose all my Feeds there were no backup as I've been using RSS in Opera as primary rss feed - why do I need to care about backups if they must be back'ed up and sync'ed via opera servers - that was the premise of all this sync approach, isn't it? And I could do backup locally - but I have no idea where to look for them. Where Opera stores them internally on my machine?

Opera guys - could you confirm you'll resolve the issue and return our RSS feeds after issue fix?

What's strange - that I installed Opera Beta (from scratch) on the same machine - logged -in for Sync - still don't see MY RSS feeds.
It is machine-related issue or sync-related?

Since the feeds were no longer there, maybe Sync thought they were removed and synced it?

I really concerns me - as I don't want to loose all my RSS.

Did not see that in list of known issues

And I didn't say it was in a list of known issues, I just said that it is a known issue.

will this be fixed in next version?

Don't know, I guess so since it impacts the users experience.

Feeds will appear again?

I guess we all hope so.

Is everything else the same? Bookmarks, speed dials, etc?