Actually, this is a loophole that low quality airlines sometimes use to get fresh faces to give their awful training departments a try. A training department is incompetent with washout rates exceeding 50% in many cases, and people are expected to fail in high numbers from every training group as a rule. These people go home jobless, minus a couple months wages from their training time and grateful there is no PRIA trail following them along. But there actually should be a PRIA trail for all the failed training attempts at these companies, and the company should be held accountable for low pass rates and be required to correct them.