I have special thumbs for my trades, I manually copied them to the thumbs directory. They are crop set number 2.
I don't want this set to be overwritten by TP, so I unchecked 'active' under Thumbs crop settings. I also set file permission of these thumbs to '0'.
Yet, it was overwritten by TP. How can I have a 'static' thumb for my trades so it stays the same?