Accounting Rule of Service Line isn't Deriving from Master Item

Is there a way to set up a default accounting rule for service lines in Service Contracts? Shouldn't the default come from the definition in the Master Item?

This is what we tried to do:

 

In the Master Item, in the invoicing tab we set the item as follows:

Accounting Rule: Daily

Invoicing Rule: Advance Invoice

 

We renewed a contract by copying the original contract attributes to a new contract. The header accounting rule in the copied contract is 'Immeidate' and the lines accounting rule is 'Daily'.

 

We decide to add a new service line to the contract. The line is assigned with the item defined in the master item above (accounting rule - Daily) but the new contract line is getting a different accounting rule (Immediate).