as Jason already said, it doesn't matter in which format the device sends the trap (.0. or .6.). Spectrum will understood both, even if only one is mapped in the AlertMap file.
May you have only missed to reload the Alert/Event configuration change to the SepctroSERVER?
You will find a "SpectroServer Control->Update Event Configuration" in the Information Tab of the VNM model.
In order to get the Event messages in OneClick, you have to load Event changes for the OC Server as well. You will find this option in the OC SERver Admin page.
If there are problems with the syntax in your Event configuration, the event error log file could be helpful
.vnmrc:
event_disp_error_file=filename
Regards
Olaf