"Pilots entering training within 14 days of the actual run date will be subject to a training freeze and will not be awarded a vacancy."

Does this apply to FOs who were displaced to CA in a seat they wish to leave? And if so, does that mean they can bid for another position after they are DONE with training during the next vacancy bid?

When an FO is displaced to CA, are they displaced only into available vacancies, or can they displace any other CA junior to them into a seat they desire? i.e. this vacancy bid could cause a junior CA to be displaced by a forced upgrade FO? And then the whole process repeats down the line perpetually for many months and system bids?