Currently the recently-updated macro can display a maximum of 200 recently-updated records, as this value has been hard-coded in the macro:
There is no way for this value to be configurable via the UI, other than editing the above file and repackaging. For non-technical customers, it would be handy if this could be easily configured via the UI.
It appears to be have been recently introduced, not affecting versions prior to 3.x, as per this comment from one of the customers:
This worked fine in 2.10.1--I was able to get all records back to the beginnning.