Using the DELETE command in EXEC PGM=IKJEFT01 apparently only deletes a Partitioned Data Sets (PDS) main member and leaves the ALIAS name still intact and present.
CA PDSMAN PDS Library Management for z/OS has no compatibility issues with leap year.
There are no known or expected problems for CA PDSMAN PDS Library Management due to the Leap ...
To check what PDSMAN maintenance is applied on your system run the following batch job:
//CHK EXEC PGM=PDSM19,PARM=CHECK
//PDSMRPT DD SYSOUT=*
Stabilization Announcement for CA Panvalet, CA PanApt and CA PanExec
1) PDSE enhancements. PDSe's have become unavoidable. PDSMAN must modernize to provide some advantage or risk being obsoleted.