D4L019 is a "container" hot fix that contains "member" hot fixes which will update your SAS software components.
See "What is a container hot fix?" in the SAS Hot Fix FAQ for more information on container and member hot fixes.
A manifest listing the contents of each of the following "member" hot fixes is available:
D4M005 manifest for SAS Risk and Finance Workbench Server 3.2
D4N019 manifest for SAS Risk and Finance Workbench Mid-Tier 3.2