KiCad 5, Copy Footprint to another library
- Right-Click on source symbol name
- Copy
- Right-Click on target library name
- Paste symbol
- Right-Click on symbol in target library
- Save As
- Right-Click on symbol in target library
- Delete
In KiCad 4 I could do this faster. From memory:
- Choose souce library
- Save As --> Choose library and type in the new name