Changing from 10.04 LTS to 12.04 LTS - importing all email settings and mail from 10.04/Evolution 2.28.3

[Andrew]

Running 10.04 LTS at present but now thinking of installing 12.04 LTS.
However, the email client in 12.04 (Thunderbird) looks a bit different
from the current one (Evolution 2.28.3) - so will I be able to import
all my email settings etc from the evolution-backup.tar.gz file produced
by Evolution 2.28.3?

Andy