@Alkeris Sorry to hear that. A patch might have broken it. However I'm kinda checked out of this game and I'm on a new PC so I won't be updating this. I was waiting for another patch before I get back to modding but it doesn't seem like that's happening.
Thank you for your interest. Sorry I won't be updating it.

It seem that there is a bug with the CNDR. The node icon appear but the time needed to built it is infinite.

I can find no sign in the XML that the harmony combat rovers could get that ability.

I don't mean the Xeno Cavalry. I was talking about the Harmony Combat Rover upgrades, which at one point in development were going to have a perk which would give them that ability. Not being much of a Harmony player myself, I didn't notice that it wasn't in the final version.

@Toheck I tested it myself and copying the Impi's special promotion does nothing. The Xeno Cavalry does not get this ability.

I'm pretty sure that the Impi first strike code is in the game. Doesn't the Harmony Cavalry unit get that ability as a late-game perk?

The only reason I saw to build the specialty unit (especially the Xenoswarms) was to use them for garrison till they got upgraded later in the game to be worth it. This makes more sense.