I agree with 1passguy, I don't think what you're going to do will work. Note that B747-437B says he's doing it with CO and KL. This alliance is so brand new, I bet OP hasn't fully integrated with the KLM database yet.

I'm almost sure you're going to set off many alarm bells when you try to take one ticket number and apply different segments to different accounts.

Let us know what happens.