[quote]I tested this, and they are saved under "PLSQL Developer 12" for me. Version 11 stored them under "PLSQL Developer". Can you verify?[/quote]
I checked again, and the last change in the Standard Queries is from 19/10/2016 in the "PLSQL Developer 12" directory, while all my changes are stored into the "PLSQL Developer" one.
I then looked at the other directories where "PLSQL Developer" is used rather then "PLSQL Developer 12":
- PFInfo
- Red Gate Plug-In, allthough I don't use it
I checked the files, and this file is also updated in the wrong directory: