What happens to existing contracts if I disable a Contract Expert rule?

As a contract author, whenever you run the Contract Expert, the change applies to all new and existing contracts. But, approved contracts remain intact. If you disable a clause selection rule, Contract Expert removes the suggested clause the next time you run it.

If you disable a contract terms template selection rule, it doesn't make changes to the templates that are already applied to contracts, but indicates the change during contract validation and on the contract deviations report.