I know the data model for EHSM 4.0 is different. Does it use the standard LSMW to import data from non-SAP system? Or is there any other tool?
may be check:
There is an integration option between SAP EHS Management and Component Extension for SAP management. So you would firt load data to EHS "classic", which would then pushed over to Component Extension.
Which data is of interest to be imported?