This is tentatively scheduled to be fixed in the CA Spectrum 10.2.1 release.
This is resolved in PTF patch Spectrum_10.01.01.PTF_10.1.152 for 10.1.1. The release notes show:
This is a PTF (Program Temporary Fix) patch for the following issue:
Symptom: The Last Occurrence attribute is not set properly for alarms on Solaris
Resolution: The Last Occurence attribute is now properly set on all platforms.
NOTE: This solution only resolves the problem for new alarms, existing alarm data is not recoverable.
If you need the patch please open a case with CA Support.