Any text in your cues in Lexicon is sent to Engine. But if they have no text in Lexicon, they will have no text in Engine.
Where did your cues come from? Traktor for example does not add any cue text by default so after importing from Traktor, your cues in Lexicon won’t have text
Serato doesn’t add a default cue label either so they come into Lexicon without text.
I don’t think I want to “fix” this because it would mean giving all cues without text (regardless of where they came from) a standard label like “Cue 1” etc. And other users will wonder why they suddenly have texts that they never added.
So I’m going to leave it as it is now. Serato doesn’t have default cue text so I think the expectation matches the reality as much as possible now.