[imp] Horde_Prefs db-schema upgrade crashes identities

[norbi]

Hi List,

next day, next problem :(
After upgrading the db-shema for Horde_prefs via the webinterface, horde 
5.0.4/imp 6.0.4 dont shows existing identitys.

Its reproducable, in database i can see alls identitys(select * from 
horde_prefs where pref_uid='name at domain.tld' and pref_name 
='identities'), but horde dont use/listen them. So we have lost in one 
account about 140 identitys in another one "only" 5!
I think it has to do with umlauts in this identitys, like name of 
Identity "Standardidentität"

any hints ?

Norbert