Some Lotus Notes items are created using the native Lotus RichText Format (RTF). These items are typically generated in a Lotus Notes environment and sent to other Lotus Notes recipients in the same environment.
When the Lotus Notes client DLL accesses a Lotus RTF encoded item, it does not attempt any conversion when providing the data for migration, because it is recognized as native encoding. Lotus RTF encoded data passed by the Lotus Notes client DLL for migration needs to be converted to MIME content before it can be migrated.
In cases where item data cannot be fully converted to MIME content, the data that can be converted to MIME is processed, resulting in a partial MIME conversion. No errors are reported when this happens, and the result in some items may be migrated to a Destination with a non-formatted plain text message body, missing in-line images, or non-clickable or missing Lotus DocLink links.
Add the Advanced Option LotusEnableRetryOnGetMIMEFailure=0 to the migration project to resolve this issue,.