How can we use CA PDSMAN to update, via the LLA refresh facility, a single member of a load library rather than force a refresh of the entire load library?
The $LLA control statement supports a MEM= keyword. This should be what you are looking for. Update your PDSMINIT table with something similar to the example.
EX: $LLA LIB=data.set MEM=module UPDATELLA=Y
See the PDSMAN PDS LIBRARY Management LLA Extensions and Performance Facilities User Guide. Page 20-21