This object lists the specific hardware features that were lost as a side effect of moving from the previous microcode bundle to the current one, the counterpart to cpmcModulePsaFeaturesEnabled. It matters because a microcode update intended to add a new capability can sometimes silently drop an older feature the network depends on, and this is exactly the object an admin should check immediately after any microcode reload to catch that kind of regression before it causes an unexplained outage elsewhere. Seeing an unexpected feature listed here after a routine reload, one the admin was not trying to remove, would be the first clue that this bundle swap needs to be reconsidered or reverted.