In Ability Draft(AD) i used QWE(DFG)R, but the Legacy/AD-Legacy stacks with the custom key.

For example, i had a game on BH with Laser [T], Heat Seeking[J], Dark Pact[W], Track[R]. [] are the AD-Legacy

Switched to QWE(DFG)R and whenever i use Heat Seeking[W], it will trigger Dark Pack[E] because on AD-Legacy, it's [W]