Hi Pankaj,
Original course: Première approche Construction d'équipe
Copied course: Création d'activité Rouge Orange Vert
The copy is now in a different category than the original course
I changed the name and the Alias of the LAST lesson in the copy course
I Edit (with Edit button) the last lesson in copy course suppressing the last lines: PS...
I save the lesson
I open the LAST lesson of the original course
even the name of the lesson is different (old name) I get the last lines (PS...) suppressed !
Same result for the reverse way (first changing original lesson then going to the copy lesson),
Hope I am clear, i did it several times
Regards