Raising a Dispute WITHOUT generating the Credit Memo

Content

Has anyone achieved an 'FYI Only' dispute? 

We have a Project centric customer so all Credit Memos should be initiated from Project Billing, however we also have implemented Advanced Collections. The customer would still like to use the Dispute functionality but only as an FYI process, to feed into reporting. 

The only option I can think of it to prevent the Dispute from being approved using workflow setup.

Any other community experience on this is appreciated.

Version

R13 20A