After change product count amount not changed

Hello all, maybe somebody know why when in front page in basket change product count for example from 2 to 1. And enter button buy. And go to admin panel i see that i have 1 product count and amount for 2 products ?

I dump changeBasket function and in

dumpVar(oxConfig::getParameter( 'aproducts' ));

i have array

array (
  '6963f7eb72fdf57c91227bacb06bb36e' => 
  array (
    'remove' => '0',
    'aid' => 'f984616a3abe9b996229f53be3758ea0',
    'basketitemid' => '6963f7eb72fdf57c91227bacb06bb36e',
    'override' => '1',
    'am' => '1',
  ),
)

but by function getParameter

dumpVar(oxConfig::getParameter( 'aid' )); 

i get null , why?