A created chord is saved as "chordet1.dat" and "chordet2.dat" at the folder of Easy Music Composer.
You can see these files from this folder.
ProgramData > EMC D > mftemp976 > chordet1.dat , chordet1.dat
You can change chordet1.dat and chordet1.dat if you need.
The chord that is made available in all the songs, you do not need to save the chord individually.
This music of Easy Music Composer
This music of MIDI