I believe that the last time we looked at the Phoenix pay system to estimate its costs was in 2019. A lot of water and money have flowed under the bridge since then. And I was somewhat surprised when I saw in the last budget that additional hundreds of millions of dollars had been allocated to improve Phoenix. I raised the matter with Department of Finance officials, who told us that this was the last time and that, this time, the system should be repaired.
So I share your scepticism. However, apart from expressing my own surprise, I haven't received a response, since my more recent report on the subject dates back to 2019.