i am keeping working on song mode / arranger mode.

I have noticed another strange behavior :

Suppose :
_ monomachine is the master in song mode
_ octatrack is slave in arranger mode
_ I play a 64 lenght row
_ I decide not to wait the lenght of 64 but to play the next row faster on the monomachine by pushing ENTER on this next row.
=>the octatrack react perfectly by changing the row i decide to play with the ENTER button.

BUT I CANNOT do the same thing when Octatrack is the master and the monomachine is the slave .

WHY ???

for other reason, it would be better for me to have the octatrack as the master.
So at this time I 'm keeping the monomachine as the master but it 's not the perfect routing for me .

Can anyone as a clue about this ?
thank you !