atm8 silent gear blueprints vanishing

[euploidea]

Hi there,
I keep loosing my silent gear blueprints...
I use a blueprint book and do put it into the refined storage, which is connected to sophisticated storage.
After I restart my singleplayer world and open the book, the previously stored and used blueprints are gone.
Happend three times already, crafted or cheated the blueprints and retried - same issue after restart.
And as this is my first time playing after more than 5 years (without ever having any bugs to report or any crash log to show) I have no idea what to do or try next... ^^