Will not overwrite existing hard post click cookies of traditional affiliate types.
Example: A soft click affiliate will only receive the sale if they are the only affiliate in a journey, if another affiliate is at the start of the journey the soft click affiliate won't get awarded the sale. This is mainly for mechanisms like toolbars that sit in a stage where they can overwrite other partner types (i.e. adding vouchers to the checkout).
References: Awin Soft Click