Hi again,
It was my mistake, because the sql service pack wasn't applied...

After
the sp2, it is possible to change mappings for more tables in one step. But I
have a little problem again:
If I check the 'Optimize for Many Tables', the 'enable identity insert'
doesn't work (even I mark out it). If I uncheck the 'Optimize for Many
Tables', then I get error like this:
Validating error: The column "<column name>" cannot be processed because more
than one code page (1252 and 1250) are specified for it...
Any advice is appreciated.
Thank you
chris
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