Re: [Evolution] Transfer Evolution data

[JPM <jpm netgate com au>]

On Thu, 2021-02-11 at 09:43 +0100, Milan Crha via evolution-list wrote:
> On Thu, 2021-02-11 at 15:19 +0800, JPM wrote:
> > I currently use Evolution 3.10.4 ... to a new Evolution 3.38.3-1 
>
>       Hi,
> there's a very long gap between the two versions, I'm afraid there's
> even no migration code from such an old version to the latest stable.
> Some internal formats changed too.
>
> You can try to create a backup file in the 3.10 and restore from it in
> the 3.38 the first time you run it in the Mail view (like from a
> terminal with: evolution -c mail). If that fails, you can cleanup the
> Evolution data (except of GSettings/DConf):
> https://help.gnome.org/users/evolution/stable/data-storage.html
> and start from scratch. That requires to run
> `evolution --force-shutdown`, thus also the background processes are
> started with clean data.
>
> Being all your accounts remote (IMAP/EWS/...), then I suggest to simply
> recreate those from scratch. With respect of calendars, contacts and
> such, right-click the calendar/address book/... in the respective view
> and pick "Save as...", which should save the whole calendar/book/...
> into a single file, which can be imported in the new version. Again, if
> those are remote calendars/books/... then just add them manually.
>
> I do not recall, does 3.10.x save its data into ~/.evolution/ or under
> ~/.local/share/evolution/? One of these locations contain local data,
> those under On This Computer. For example mail is at ..../mail/local/
> subdirectory. I do not know whether 3.10 used Maildir or still MBOX,
> but you can create a temporary account in the new version and point it
> to the copy of that directory, which will let you copy/move the mail
> from the directory copy to the current On This Computer location. I say
> "directory copy", because it's better to work on those files from a
> copy, because you'd have the original files in case anything goes
> wrong.
>
> All of this only if the backup/restore won't work for you.
>
>       Bye,
>       Milan
>
>
> _______________________________________________
> evolution-list mailing list
> evolution-list gnome org
> To change your list options or unsubscribe, visit ...
> https://mail.gnome.org/mailman/listinfo/evolution-list

I will try the backup / restore first see if that works. If that copies
some but not all or scrambles things, how do I restore Evolution to a
'virgin' state? 
I'm pretty sure 3.10 does use Maildir (in the settings it say Maildir
next to 'On This Computer') but in the 'Save as' I can also choose MBOX
I can also confirm that the mail data is save at
~/.local/share/evolution/mail/local
The accounts information is at: ~/.config/evolution/sources 
Looking in that location I see entries (3 per account) that start with a
15 numbers@ computer-name, some of those entries list an other
computer-name? (my laptop computer) should I be concerned with that? 
-- 
Cheers,
JP