- did you write your own twiki integration or use an existing integration?
- does the integration synchronize user accounts between twiki and g2?
- does the integration synchronize passwords between twiki and g2?
with g2.2, this is possible if twiki uses plain old md5() as password hash function or supplies the passwords to g2 in cleartext.
in g2.3, this works also if twiki is using phpass for password hashing.