This is a repeat of what happened with T406771. I've linked the import summary screen below where you can see out of 167153 records there were 350 errors that could not import due to the CID not being in Civi. Ideally we can get the list of new and old CIDs for those 350 to send to Faircom so they can update their list and then also re-import the DM activities with the new/correct CIDs.
https://civicrm.wikimedia.org/civicrm/queue/monitor?name=user_job_3553