> At least you could've let the old forums locked and searchable
My point exactly! The old forum should be made accessible, until all the issues with this one are resolved.
Not that easy I'm afraid from an SEO perspective, all links need to be 301'd to avoid duplicate content penalties.
Aware there are some missing features, but they are on the way.
Regarding search, until it's out you can search the forums using Google, EG:
google.co.uk/search