possible solution (Score 1)

You stated that they had sent someone out for training and that they left the company soon after the upgrade to AD. It's possible that after getting their "fingers burned" that they are not wanting to spend more on training (why train someone for another company?). One way around this is to offer to sign a contract that you will continue to work for the company for a specified length of time if they pay for the training and that if you leave before the said time then you are responsible for paying back the cost of the training.