[6.9.2] SMART settings for individual disk is not saved

I have H240 controller that do not read smart by default. but when i go to 

DASHBOARD -> Array -> disk 1 > Smart Settings

than i chose controller type HP cciss 

index 4

/dev/sdf 

and i click Apply  - all SMART data for this disk is read. Hurrey!!!

than i go to disk 2 and repeat process 

chose controller type HP cciss 

index 2

/dev/sdb and again all SMART data for this disk 2 is read BUT for disk 1 all SMART data is cleadred. (set for "use default")

and when i set data for disk 1 than info for disk2 is cleared angain and so on. all go for "Use default" and index of drive is empty.

it seems that clicking name of any disk and entering this disk settings resets Smart settings.