Prefixes cannot be changed not working with harvest slams

Hello,

I added Prefixes cannot be changed from my crafting workbench to my two handed-axe.

I then used Augment an item with a new attack modifier, it slammed 0.4% of Physical Attack Damage Leeched as Life which is a Prefix.

I'm not sure if this would be considered a bug, however one should know since I wasted two ex. This is especially difficult for those who don't know anything about crafting.

Bug reference number 3,399,161,921

It seems perhaps this is worded correctly, I tried removing random life and it couldn't remove the mod which is great.

Perhaps I shouldn't assume this would protect an exalt slam of a prefix?

Meta crafting does not stop a blank prefix or suffix from being the target of an augment with Harvest. I conjecture this is because a blank prefix does not yet exist to be unchangeable. Once it's there, you can't remove it with Harvest without taking the metamod off, because then it does exist and the "cannot be changed" applies.

prefixes cannot be changed means the mods on the items cannot have their values changed or removed, it does not protect from slams.

but... why didn't you just block the third prefix with a craft before harvest slamming, significantly cheaper than the meta craft.