[PenguinTrax]

I just checked my Green Book, page 87 in teh chapter regarding recruitment mechanics:

Transfer Members:
RESOLVED, that is a chapter is at total and wishes to affiliate a transfer member, it may do so evne though the addition of that member will put it over Total.


and I know that on several campuses, chapters do this but it's not really 'legal':

Alumnae Status:
RESOLVED, that vacancies in chapter Total are not created by the granting of alumnae status to undergraduate members except when a member group is recolonizing.

(Note: if the undergrad is leaving campus (due to marriage or transfer to a campus where this isn't a chapter into which they can affiliate), this does not apply as far as I know).