even trying to remove the loot below, when i go into the game, it still adds the new loot into polarbears. which means it's only the cow thing (it was just the cow lines before I added the polar bear lines in hope of removing it but it doesn't work still.

[
{
"mob": "minecraft:cow",
"remove": "minecraft:beef"
},
{
"mob": "minecraft:cow",
"player": true,
"item": "minecraft:beef",
"itemcount": "6-8"
},

{
"mob": "minecraft:cow",
"remove": "minecraft:leather"
},
{
"mob": "minecraft:cow",
"player": true,
"item": "minecraft:leather",
"itemcount": "6-8"
},

{
"mob": "minecraft:polarbear",
"remove": "minecraft:beef"
},
{
"mob": "minecraft:polarbear",
"player": true,
"item": "betteranimalsplus:bear_skin_kermode",
"itemcount": "8"
},

{
"mob": "minecraft:polarbear",
"remove": "minecraft:leather"
}

]