The age old conflict in management, dazzle with brilliance or baffle with BS. The latter wins out far more often than it should.
AWD Alliance literally put a couple of hundred people through Lean Six Sigma training and started clearing out operational problems back in 2011/12. They targeted the big stuff, the things causing pain and the easy fix "low hanging fruit" clearing up a stack of problems and turning the project around. Even though there had been a couple of reviews showing the improvements and that the rejigged management team were doing well when the government changed Johnston had been caning ASC in particular for so long he was almost obligated to keep bashing them, besides if they were shut down his home state would be in prime position to get all the resulting work.
Once johnston was sacked Abbott apparently still wanted to make BAE prime and give them operational control of ASC but the defence staff on the project made it clear that would be letting the fox in the hen house as Baes Australian management team were the ones who caused most of the projects build quality, schedule and cost issues in the first place. ASC had the best plan going forward but sticking with the status quo was unacceptable after all the noise they made so they put Navanri in charge of implementing ASCs existing and working plan.
End result most of the ASC staff and management who fixed things were shunted sideways, sent to other projects, made redundant or retired while navantia personnel replaced them and claimed credit. The real irony is that by the time Navantia got the job, BAE head office, who had been seriously embarrassed by their Australian team had gone through the place with a machete and completely tired things around there too. Long story short, BAE, Forgacs and ASC all worked their backsides off, ended up doing great work and delivered a higher quality, better performing ship to the RAN then any of the half sisters operated by the Armada or Norway, but all ended up being shafted because of the mistakes of individuals who moved on years earlier.