Import old Twitter posts into an Identi.ca/Laconica profile

Hi, sorry for my English and sorry if it is a duplicate feature request, the search system for trac is so much complicated for me.

Currently is avaiable an option to automatically send new laconica/indenti.ca posts to a given twitter account. But I think that a great addition will be to import all previous posts from twitter into identi.ca (for those like me, that have started to post on twitter due to their rename and only weeks latter discovered indenti.ca).

This may be complicated to implement, since it may requires changes to allow new posts in the past in order to keep the original timestamp.