I am working on this bug (#2152886). It appears that the BizComp does not get saved in this case, but if you refresh the project navigator, then the BizComp shows up. So it actually gets saved correctly with international characters, but the problem occurs while opening(parsing) it. So it does not show up automatically in XA-Designer upon completing the BizComp wizard.

I could open it in XA-Designer using WTP XML editor. So, in order to resolve this bug, it appears that it is just matter of telling the default XML parser that we use to parse the UTF-8 characters, or use different XML parser. It is not clear from JDOM API docs how to set that, and I am still searching for any ways to accomplish that. If anyone has any information or links which describe that, then please forward it to me.