Summary:

File an email in outlook to CRM and make sure the email is linked to a company, person and an opportunity.

Go into CRM and locate this communiction, note the Email communication is generated with Company and Person record but no About/Regarding record is in the communication ie the opportunity

Workaround:
Adjust the communication manually and adding in the Regarding? About missing information.

Resolution:
This issue is resolved in Sage CRM version 7.2b.