I don't really track changes to CPID as it's much the same as someone changing their nickname on a project, but I certainly am not averse to updating the cpid for projects that are deemed old for a user and have done it in the past for quite a few users. Given BOINC has no process in place to do it ( and I don't think they could) the logical place is in the stats sites. It's a semi-manual process right now as it's really few and far between users who want it.

Bok