Creating or modifying proformas does not automatically result in new down-bars being created on your EPB.
This would generally be considered undesirable behaviour if you were modifying an existing proforma. There
are a couple of situations where the proformas are used to generate down-bars:
1 Whenever a PS client starts in design mode, the proformas are used to EXTEND down-bars into the future up
to the limit selected in global set up.
2 You can choose the option from the EPB's Design Menu to re-create down-bars from proformas.