For external collaborations, it shows the date the collaboration is going to end when it's first set in the user activity to report as
-Action: Collaboration expiration
-Details: To: YYYY-MM-DD

However when you extend this period, the "To: YYYY-MM-DD" isn't displayed so you don't know until when it's extended until unless you go the individual folder/file itself and look at the "clock" mark manually.
In the report
-Action: Extend collaborator expiration
-Details: [Blank]

The customer wants to have a grasp of each expiration dates so they're saying looking at each item manually on Box is impractical.
They would like the extended expiration dates to be shown in their user activity reports.