if i give the character that this is attached to the ARMY trait with old nan, does this attachment fall off?

Nope. The non army part is only a play restriction. So once its on there it doesn't matter if its an army or not.

Staton said:

dh098017 said:

(3.20) Attachment Restrictions
Any attachment that has a restriction (such
as "Lord or Lady only" or "attach to an
opponent's character" ) is immediately
discarded from play at any time that restriction
is not met, regardless of immunity. Such
restrictions are constant effects, and the
attachment should be immediately discarded
any time a restriction is not met including
during setup.

For example: Tom has played the card
Motley (Core Set B67) on Kris's House Tully
Recruiter (Core Set S21). Motley has the text:
"Attach to an opponent's character." Later in
the game, Tom uses Seductive Promise (Core
Set T175) to take control of the House Tully
Recruiter. Because the Recruiter is no longer
"an opponent's character" from the perspective
of Tom's Motley card, Motley is immediately
discarded from play.

So there is no functional difference between "non-Army character only" and "attach to a non-Army character." If the character with Flogged and Chained gains the Army trait, the attachment is illegal and is therefore discarded.

ktom said:

At any point, was this ever, not the case? I.e. There was a functional difference and "non-Army character only" would be discarded when the trait was gained, while "attach to a non-Army character" would stick around in the same circumstance? This feels like one of those rulings that has blown around the weathervane. Or it could just be the fumes from my hearth.

Maester_LUke said: