Ok, so this is from 2016… and I just checked the Rhino 7 WIP, and I didn’t see a G3 in MatchSrf.
Since I already created a similar thread which deals with Rhino being unable to re-create the state of surfaces/curves before history is broken due to tool limitations, I believe this is another case since Blendsrf does G3 but Matchsrf still doesn’t?