Last modified: 2012-12-17 23:21:42 UTC
The extension already allows to merge contributions etc. from a real user A to "Anonymous" (user_id=0) user B. Only as an enhancement, the extension could be deliberately modified so that also merging all "anonymous" contributions to a certain user B would be possible. (filed for better tracking of this idea; low priority)
By anonymous contributions, you mean the contributions from a precise IP or to grab any contrib from any IP?