ETC (Cost) does not seem to update by itself

Document ID : KB000102786
Last Modified Date : 20/06/2018
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When the resource changes their ETC to 0, the ETC (Cost) does not seem to change even after the Rate Matrix job runs. How is this field normally calculated?
The additional action that needs to be run is Update Cost Totals on the project (or the Update Earned Value and Cost Totals job) . 

Option 1: To run Update Cost totals from a project:
  1. Go to the Team or Tasks tab
  2. From the Actions drop down on the right hand side, select 'Update Cost Totals'.
Option 2: The job Update Earned Value and Cost Total can also be run via Home->Reports and Jobs
Additional Information:
For more details on the Update Cost Totals job, see  Update Project Task Cost Totals in the Calculate Earned Value, EAC, ETC, and Other Metrics documentation.