Update: The bug is not an isolated instance.
I can now confirm that this bug always occur when recrafting/upgrading an item that was crafted with Primal Infusion, then replacing the Primal Infusion with a Concentrated Primal Infusion. I also affect other replacements like missives, embellishments, and gears and safety reagents in engineering crafts. It seems that the game now includes the extra difficulties of both the Primal Infusion (which is being removed) and the Concentrated Primal Infusion. This results in extra 30 difficulty.
I made another bug report to add this detail in the bug reporting system.
End of Update
I was trying to recraft a dagger for a rogue today on my Blacksmith
As you see in the screenshot, the recipe difficulty is 420. The base recipe difficulty is 300.
Conc. Primal infusion adds 50
Rank 3 missive adds 15
Alchemical Pocket adds 25.
That’s a total of 390 and not 420. I encountered the exact same bug when I was trying to make a Flaring Cowl on my Leatherworker.
The extra 30 difficulty caused me to be unable to craft the dagger at the requested quality or be able to proc 418 item level with inspiration.
I crafted multiple 418 daggers before on my blacksmith. So not being able to craft them anymore is new. Blizzard can you please look at this and fix?