Re: [Evolution] downgrade, fetch mail, upgrade --> mail gets deleted

[Thomas Prost <thomas prost prosts info>]

Am Dienstag, den 02.04.2013, 07:12 -0400 schrieb Adam Tauno Williams: 
> On Tue, 2013-04-02 at 05:57 +0200, ChO₂ wrote: 
> > Hello everybody,
> > I just ran into the following issue:
> > I downgraded from evolution 3.4.4-2 to 2.30.3-5. As a result, all of my
> > mails, my filter rules and the content of my signatures were gone.
>
> Expected.  
>
> > I wasn't worried at this point because I was sure that moving back to
> > 3.4.4-2 would bring my mail back. Before I did that, I went to fetching
> > new mail and reading it.
> > When I finally upgraded to v3, my old mail actually reappeared - but now
> > the mail that I had fetched using v2 was gone. And this time, "gone"
> > means deleted, not invisible.
> > Fortunately, I had somehow sensed that something like this might happen
> > so I had made a backup to restore and import the lost messages from.
>
> Yea, you now have two versions lying about.  The automatic-upgrade can't
> have any idea what to do with that;  it can't merge the bits you
> accumulated in your old 2.x data into what remains of your 3.4 data - it
> already did the 2.x -> 3.4 upgrade and then YOU went back and added more
> bits to the 2.x data. 
>
> Evolution did not delete anything.
>
> > For me, everything went well, but WHY does evolution delete my messages?
>
> Evolution did not delete your messages, you did.  Or you at least made
> them 'unfindable'.
>
> You can possibly import the MBox files from the 2.x folders into 3.4 -
> they should still be there, I assume;  I can't see any reason that
> wouldn't work, it will just be a manual process.  But Evolution did not
> delete anything.  You just need to find the 2.x MBox files,  2.x is a
> very long time ago and I can't remember where they were [ ~/.evolution
> maybe? ].  But Evolution did not delete anything.

I'd also have a brief look at local/share/evolution/mail