Thanks I'll check with my Adobe team and report back to the thread

GDPR doesn't impact this area and my apologies but my contract states "data retention for 25 months" so I'm going to go back to my Adobe contact and take this up with them.  I will post their response here so we can close this out Thank you for replying, much appreciated your taking the time and ass...

Thank you Digital B2B'er is this a standard on the app or a contractual term please?I had checked our contract and had found no specific section on tracking / delivery logs however a general statement about data retention "With respect to On-demand Services, Customer Data may be permanently deleted ...

Does ACS automatically delete tracking & delivery logs (if this what we call contact history in Adobe?) after a certain number of days?  If this is the case what is the out of the box timeline?  Can these timelines be changed?Thank you