1. SilkTest 13.5 is no longer supported in TM ART. Go to SilkTest 15. KA404663.
2. SP2 of TM ART 4.2 drops support of Citrix Server 4.5. And the code that supports Citrix Server 6.5 is much better in SP2 of TM ART 4.2 so if you are struggling with getting TM ART monitors to work with Citrix Server 6.5 please try SP2 of TM ART 4.2. A Technical Bulletin for this is being worked on.
3. SP2 of TM ART 4.2 adds more support for Remedy. TM ART Monitor Workbench 4.2 is based on SilkPerformer 9.5 but for SP2 of TM ART 4.2 all of the SilkPerformer 15 code for Remedy monitors was added to TM ART Monitor Workbench. The Technical Bulletin for SP2 tells the new levels of Remedy that are supported.