If you copy and paste properties over a frame that has Text with multiple styles in it, all the text styles will be detached.
- Create a frame with two text layers, each with a different style applied.
- Duplicate frame
- Copy Properties (Ctrl+Alt+C) of the 1st frame (the frame being selected)
- Paste Properties over the 2nd frame.
- All the text layers will lose their attached styles in the 2nd frame.
Notes:
No matter how deep the text layers are in frames or groups, every style will be detached inside the frame.
Colour styles will not be detached inside the frame = Correct behaviour.