just to share our current way to handle this matter as we do not object 一人多队 in the past, present and of course, hopefully into the future.
For our members under 一人多队, they participate in all internal activities as other members, eig. internal competition, but for external activities, they have to decide (we also communicate with the leader of the other team) to represent one team only during the specific period, of course, they can indicate if they want to represent another team for another period (we communicate with the leader of the other team again).
One example is we have one Grade 1 player joined us in July 2005, particiapted in our internal competitions 2005 and 2006 but only starting to represent us from Apr 2007 in external activities.
So far, we do not encounter any problem in this way of handling, and we will continue to use this method until review to be conducted if any.