As Far as I can tell the system is as follows?
Omloop-4 transfers-KuurneBruxelles-Unlimited transfers-Samyn-6 transfers-Bianchi
Make your own checks as it sounds as if those racing in just one of the races may be listed for both i.e Cavendish is in the provisonal OPQS line up for Kuurne but not for the Omloop but will be listed in the riders list for both.
Just a scoring question:
Will the scoring for Purist take all 4 races as a whole OR split it into the 2 sections as divided by permitted transfers?