Enfilade (and routing in general...) [Napoleonic Battles]

[Mowgli]

If playing in turns fire effects get afaik applied right away per fire combat. So for other moral checks the -2 modifier might not be applied.

So you mean that it still increases the chance that a unit disrupts when it is hit by enfilade opportunity fire (units CANNOT rout due to opportunity fire). Could be, there is no way to test it other than by "gut feeling". 

In any way the effect is much reduced, as opportunity fire tends to inflict comparatively few casualties (due to the -50% opportunity fire malus) and is thus unlikely to trigger morale tests in the frist place.