Doing some cleaning up of the logbook...and have a question

Couple months back I had the opportunity to seat right seat twice on a plane I wasn't typed in. I am fairly certain both aircraft require 2 crew members typed/current, but I am not sure. The first aircraft is a G150, the second being a HA850. Is this something I should keep well clear of my logbook, or put it in there, just not count it? If it means anything, both were Pt91 operations.

Thanks in advance