If i have a project with a task with a billing rule T&M.

For some reason, sometime i do a support case which i set time activity billable, and i bill it via Support case invoicing

For some reason, sometime i do a Service Management Appointment which i set time activity billable, and i bill it via Service Management invoicing.

Does the system is done to handle that in a global behavior in order to dont bill the transaction twice with the T&M?

EX1: set in the project transaction Billed to true when we bill a Support case or a Service order?

EX2: set in the project transaction Billable to False when we bill a Support case or a Service order?

I hope it’s clear, let me know if you have question

Thanks!