If BA and BASSA werre to negotiate a settlement which produced anything less than the original cost savings demanded, then the costs to BA would be far greater than simply replacing the crewmember on the 747.
All of the unions in BA were given cost cutting targets, and all of them, apart from BASSA, negotiated settlements. However, all of the settlements contained a clause which stated that the aggreement would be void unless all staff groups achieved their cost saving targets.