Was told to post this issue on this github instead of the GTNH one
GTNewHorizons/GT-New-Horizons-Modpack#4195

Expected Behavior

Basic Machine Casing dropped instead of machine, the machine should have dropped

Current Behavior

Tried to destroy the Crop Harvester (IC2) with the GT Wrench to replace the machine like every other machine

Possible Solution

Make the GT Wrench disassemble IC2 machines, almost all items used in the recipe for the Crop Harvester are GT Items

Game Environment

Include as many relevant details about the game environment or modpack you experienced the bug in/on.
If you are using a Modpack:

• Modpack Name: GTNH
• Version used: 2.0.6.8

Also include:

• Gregtech version: 5.09.33.10
• IC2 version: 2-2.2.828-exp

Misc Info

Check all that apply ([ ] -> [x] - use a lowercase x)

• [ x]    Using GT:NH/GT:New Horizons?
•    Single Player?
• [x ]    Multi Player?

Fixed in GTNH 6.8+

in GTNH 2.0.6.8 is gt++ 89 lastest build

It turns out it wasn't actually working in an Obfuscated environment.

Anyway, Fixed by these two commits:
9ee7517
593b972