XBMC reads v2 tags just fine - regardless of whether or not there's a v1 tag present.
If it isn't reading your tags, it's likely that they're broken.
Always read the XBMC online-manual, FAQ and search the forum before posting.
Do not e-mail XBMC-Team members directly asking for support. Read/follow the forum rules.
For troubleshooting and bug reporting please make sure you read this first.