How to add new associations (more than one) to an existing object, using a microflow, between two entities with a many to many relationship

Hello again,

Again I am writing about something I believe must be very simple, but that I am struggling with.

• I have 2 entities - users and contracts
• A user can be associated to many contracts and a contract can be associated to many users
• I am importing this data from an external system, so I am using a microflow to create the entities and their associations
• When adding a first association, it works fine
• When adding a new one, it just replaces the old one (see below the summary of the steps I am using)
  • Getting the user and the contract
    • Changing the user
      • Setting the association to point to the contract
        • When I read it, it sounds obvious it's going to replace the old one - my problem is I can't find a way to add a NEW association…how can this be done?

Again, thanks in advance for all your help!

Gonçalo