No COGS Recognition transactions with OM with projects

Summary:

COGS Recognition transactions cannot be created with OM with projects and Periodic average costing

Content (please ensure you mask any confidential information):

The shipments and invoices of the project orders entered with the order management module have been completed and accounted for. The periodic average costing module is being used. The "Import Revenue Lines" program was run, cost distributions were run. "COGS Recognition" transactions did not occur. There is no record in the "Product Gross Margin" form. The CST_REVENUE_LINES table is empty and the AR records are in the CST_PROJECT_REVENUE_LINES table.
What could we have done wrong or missing, can you help?