UTF-8 is a multibyte character set, where the first 128 characters are represented by a single byte. Other characters, like ü are represented by two, three or four bytes (ü actually by two bytes). When importing to VBus you have to use a singlebyte character set, that is ANSI - using default locale/codepage, often Windows-1252. Then the characters are represented by the same codevalues as VBus suppose they are. The first 128 characters are represented by the same values in UTF-8 and and most Windows western codepages, so using UTF-8 works fine untill you run into characters like ü.
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