French Forward Observer - Card Posted

After a recent scenario playtest involving the use of a French Forward Observer a question came up. Could this card have the Concealed SA instead of the Camouflaged SA? Here is the wording for both special abilities:

Camouflaged - Until this unit attacks or moves, enemy units can’t attack this unit at medium or long range.

Concealed - While this unit has cover, enemy units can’t attack this unit at long range.

In the scenario being play tested a combined French / Polish force is attacking a German force. The French Forward Observer currently has the Camouflaged SA. At first, things went well, but then the allied attacking force advanced beyond the visual range of the observer. If the observer moved up, he would lose his camouflage ability whereas if he had the Concealed SA, he could stay concealed at long range. So here is my question to anyone reading this:


Should I just say, "Tough luck, that's the way it is for the French. I'll keep it the same."


or say "mmmmm...you have a point, I should swap out the Camouflage SA with the Concealed SA."


or say "You have a point, how about I just drop the French Forward Observer altogether and have you rely on a commander to spot for you if you advance too far. I'll give you more troops in compensation."