Heli 3.6.9 Alt-hold parameter settings different from 3.5.5

Thanks in advance for any help.
Question in Heli 3.5.5 and earlier versions to use alt-hold we often had to set the parameter Accel_Z_P to around 0.2 from default of 0.5 to prevent heli from jumping up and down when alt-hold was applied?
Heli 3.6.9 does not have parameter accel_Z_P is there another parameter that should be adjusted or changed before trying alt-hold with a heli?

It is now called: PSC_ACCZ_P