A customer might realize that after importing data from an Oracle Designer File into a new model using the function "import from external" that no data is imported even though the log file of the import shows that objects were found in the file provided.
The import from Oracle Designer allows the import of logical objects only. Physical objects would be recognized by the import process and logged in the import log file, but only logical objects would actually be created in the new model. Physical objects include packages, etc. and the user would need to verify that the import file contains logical data that ERwin would be able to process.