I have a 3 master set up in 2 fonts, I copied some glyphs from one file to another, paste special, and select these settings:
but it messes up the positions of the components (and components only while ignoring paths) in all the other 2 masters.
can you send me the two files, and a screenscast of what you are doing and seeing (what is messed up)?
Sending video and example now!