Enable Retain Physical Properties when you import PowerCenter metadata from a third-party tool that does not use all column properties.
When you import metadata into PowerCenter from a tool that does not use all column properties, the Metadata Import Wizard uses default values for the column properties. However, you can retain the column properties if a source or target of the same name exists in the folder. To retain the column properties, enable the Retain Physical Properties attribute in the Metadata Import Wizard. You might want to do this if you export metadata to a tool that does not use all column properties, modify the metadata in the other tool, and then import the modified metadata back into PowerCenter.
Choose Enable for the Reverse Engineer BI Properties option when you import metadata from Business Objects Designer that originated in PowerCenter.
When you export metadata to Business Objects Designer and then import that metadata into PowerCenter, you lose business name information if you choose Disabled. However, when you choose one of the Enable values for this property, MIMB preserves the business name information for the metadata.