The contract didn't specify a requirement for cat and trap, at that time or in future.
"for, but not with" was invented by some politician.
No Peter - I don't think you can blame the politicians for that one. 2010 SDSR created the option to paint a new scene from an old canvass. My own understanding of the situation was that certain non-politicians with motives to change to the C-variant assured the new politicians that it was 'do-able' and that it would bring a greater range capability. The actual mantra of FFBNW was invented lower down the food chain and fed up to the new Govt to read as SDSR policy once they'd managed to get the changes agreed. As we later found out, the costings didn't exactly stack up when ACA did the homework on making the changes. Frankly it was a wasted 2 years but the context of the B-variant being probation did a lot to force our hand to look at alternatives.