Why Maroons had to leave some Negroes in slavery ? Not all slaves wanted to be free

Not all Children of Jacob Israel wanted to be free, they forgot why they went into captivity in the first place, and were scattered into the four winds. Many still repeat the same sins, their foreparents taugt them and others have joined the enemies of Jacob's Children to their own demise, Psalm 83

Maroons do not practice chattel slavery, and were never compensated for "loss of slaves" by any Slave holding countries for slavery. Domestic servants are a part of the Children of Israel customs to this day, and days workers, or those who dwell with the families, and they are free to come and go based on the terms of their employment.