Hi,
Have you checked infotype 0 or action infotype that employment status is active ? if this is not the case and you are not getting any warning or error message while saving time record means it is time to raise ticket to SAP with sample data...also check the customer exit you implemented to populate DBM order details in catsdb in CMOD ..may be some conditions are blocking the record from saving.(you can also place debug points in the exit and check while saving)
customer exits are.
CATS0002 CATS: Supplement recorded data
CATS0005 CATS: Customer field enhancements
CATS0006 CATS: Validate entire time sheet
Regards
Ganesh