Correctly showing Polish charaters on RTF text in Microsoft Word 2010

“We have a rtf template configured for East European characters using the windows codepage 1250 (\ansicpg1250) and fonts ‘Arial Unicode MS’, ‘Times New Roman CE’ and ‘Cambria CE’ configured for charset238. Also, lang1045(Polish) is applied for all plane text. Besides that configuration, some characters are not shown properly with Microsoft Word 2010, but we can see them properly opening the rtf with other editors, like Notepad, using UTF8 encoding. For example, when ‘Ń’ character is present in the input file then in the result rtf the ‘Ĺ’ character is shown in it’s position when opened with Microsoft Word. Although, if we open the result rtf file as UTF8, we can see that the ‘Ń’ character is printed correctly, so we assume it’s visualization issue. This occurs for several characters not present in codepage 1252. Is there any way, using Microsoft Word, to visualize correctly the UTF8 characters filled up in a rtf template?“