The Empire Military would never admit to "clearing inventory," especially when calculating war expenses. They reevaluate older cruise missiles at current purchase prices and include the costs of maintenance, effectively passing those bills onto other countries.
There isn't much to say about this round of cruise missile strikes.
According to the report released by the Joint Force Headquarter later that day, a total of over 800 cruise missiles were used, achieving a 92% hit rate on targets, a 77% damage rate to targets, and an overall reliability of an astonishing 96%.
The key point is, there were no combat losses or casualties when using cruise missiles.