set OBCS_u1_adv_Tr to 1 for ALL ptracers (and not just for the 1rst one)
set OBCS_u1_adv_Tr to 1 for ALL ptracers (and not just for the 1rst one)

altMITgcm/MITgcm66h,altMITgcm/MITgcm66h,altMITgcm/MITgcm66h,altMITgcm/MITgcm66h,altMITgcm/MITgcm66h,altMITgcm/MITgcm66h,altMITgcm/MITgcm66h,altMITgcm/MITgcm66h