I've experienced an issue twice so far where all the blueprints I have stored in my Silent Gear Blueprint Book will disappear after pressing C or Z on it when attempting to craft a tool part. It seems random as to when and how it happens and I can't reproduce it consistently so far. The first time I was trying to craft tool rods and the second time was a pickaxe head, but it did seem to happen while cycling through the available blueprints. I end up having to recreate all the blueprints to continue. For now, I will stop using the book and instead store all blueprints in my crafting terminal to get by.

I have seen multiple other people mention this in the ATM Discord and there is an open issue for ATM 8. Not sure if this is a Silent Gear bug or ATM bug.