I have processed two different sets of Microsoft O365 Purview .pst exports. On both, once the Intella processing is complete, I noticed that for individual messages the Conversation Index field is displayed; however not the Conversation ID field.
Due to seeing this, I have viewed same pre-processed messages using the MFCMAPI tool (https://github.com/microsoft/mfcmapi/releases) and can see the Conversation ID.
The problem I am having is because Intella is not displaying the Conversation ID, that metadata does not appear to be exported when building a new .pst file. The vendor that is processing the filtered .pst files relies on the Conversation ID for their review system.
Has anyone else experienced this? I have processed the same data on two different systems to verify--I'm wondering if I am just missing something right in front of me. Thank you for any feedback.