Import FMEA worksheet

Hello,

I'm trying to import a FMEA worksheet  previously exported from another system in the same project but I always receive the same error message: The current record does not have a valid FMEA Tree Item or FMEA Identifier. Please selec the FMEA Tree Item and FMEA with which to associate this record.

I tryed to export the FMEA worksheet. All the possible fields has been exported in an excel file, than I imported the same excel file in a different system using the automap to be sure to avoid any possible error. Nothing to do, the error is always the same mentioned above. Windchill doesn't find a valid FMEA Tree Item or FMEA Identifier in the file to Import.

What can I do to try to solve this annoying problem?

Obviously I can select the proper FMEA Tree Item but it's a huge waste of time to do this same thing in a tree with a lot of items.

Thank you,
Francesco