How to stop Current Processor role (ChaRM) from updating to current user

Hi

We are utilising the Current Processor role in two transaction types (ZMTM and ZMAD) and using these transactions in CRM Web Client UI.

However, we do NOT want the Current Processor role to update automatically to the current user.

Here is Partner Determination for ZMTM. As you can see the Current Processor is blank in the Trigger and Access sequence fields. I have also tried filling this in but it didn't make a difference.

I have also gone into the Automatic Assignment Settings in SPRO

The Help Text for this configuration is below.

I have left the configuration blank so I don't want the Current Processor updating (i.e. whatever Business Partner we type in, we want it to stay this way unless we manually change it. No automatic update).

Despite this, the Current Processor always updates to the Current User in CRM Web Client UI. How do I change this???

Thanks all 😊

Shaun