Separating a contact shared by multiple accounts

[Jazoray]

On one network, i have two accounts. Both of these accounts know a certain contact.

The contact appears only once in the contact list.
When both of my accounts are connected and i start a conversation with the contact or the contact IMs one of my accounts, i have a dropdown menu to choose which account to use to talk to the contact.

Is there a way to change it so that the contact appears twice, once for each of my accounts?