The command Ctrl+R does correctly set the background in red when the match comes from the tm/mt folder. But the Ctrl+I command does not.
I would expect some kind of indication the text is from MT, setting the whole entry in red (like for Ctrl+R) would be fine.
Fixed in SVN (/trunk).
Didier
Fixed in the released version 4.0 of OmegaT.
Didier