When Model Calculation expressions are added or edited, it will trigger calculations to reprocess for any projects that use that Configuration Pack.

You will see a message like this confirming you’d like to proceed:

The calculations are reprocessed in the background. You can still access and edit project data while the reprocessing proceeds. If you have a lot of projects, it may take a while for the process to complete. When you open a project, you will be notified if a calculation reprocessing task is underway or pending:

You can check the status for an individual project by opening it and going to Project>Check Calculations.

You can also manually trigger all calculations to reprocess for an individual project by using Project>Reprocess Calculations.

It’s also possible to manually trigger calculations to reprocess for all projects in your cloud by going to System>Reprocess Calculations (from the Projects grid).