So according to brassplate's extensive research into the subject of Airbus rated pilots switching to Boeing it is a big no-no & should only be attempted as a last resort. Maybe you should share some of your research with the relevant authorities-I'm sure they would be more than happy to lend an ear to you. By the way, what about transfers from Boeing to Airbus? Is that a less riskier proposition? Or should the company have just let go the Boeing pilots since they may be unsuitable for transfer?