[imp] Upgrade from horde 2.0 / imp 3.1 to horde 2.2.1 / imp 3.2

[Agustin Barto]

I have an imp 3.1 with horde 2.0 working on an apache 1.3.27 and
MySQL (the latest version). I'm thinking on upgrading to the
newest imp/horde (and apache 2.0) and I'm concerned that the
installation might affect the existing databases. Is there a safe
way to make the upgrade? I couldn't find any info on this matter
on the docs.

Best regards,

Agustin