[imp] Horde_Prefs db-schema upgrade crashes identities

[norbi]

> Zitat von norbi <norbi at rocknob.de>:
>
>> 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
>
> You probably change the charset in either your database or the sql 
> configuration while upgrading.

is there a way to repair the defect identities? i cant find any charset 
changes between the update :(