Why doesn't support the converter, converting tags from wordpress to ip.content?
I hope this will be possible in a next update! :-)

Yes, I hope so too! I recently converted my Wordpress blog to IP.Content and I really missed the possibility to have all my tags converted as well.

At this time our converters don't support converting tags into ip.content from word press.

Thank you

Will it be planned in a next update? If not, why won't it?

Yes, when the converters are re-written for IPS4, this should be doable.