Tiramisu.
I trust you have reported your allegation to the correct authority and not just highlighted it on here.
I understand that anybody, strikers or non-strikers can apply to join new fleet, albeit with certain conditions inposed. Individuals will make their own decisions. For me, on what I have seen proposed by BA up to now, I'll stay where I am. When the fleet is formalised I'll make another decision. But, business rarely makes changes which benefit employees financially.