ZMCR - Release for Development doesnt work (no change document created)

Hi

I am configuring ChaRM in Solman 7.1 and I've come across an issue in CRM Web Client:

When using SMCR, the "Release for Development" works fine and the change document is created.

When using ZMCR, the status updates but no change document is created (and no errors are present)

I have a feeling this may be due to missing "Outbound Plug Mappings"?? When you copy SMCR to ZMCR these aren't copied across so it's been causing me all sorts of issues. I think I have copied across most of the ones I need but I must be missing something for this one.

Anyone know what outbound plug I need for this to work?

Or am I barking up the wrong tree and something else is causing this issue?

Thanks

Shaun