Significance of missing line (was: HBP paperback)

[potioncat]

No: HPFGUIDX 156073


Geoff: 
> That's not much information on which to build a character important 
> enough to be brought back from the dead.  I see her as a version of 
> the red shirt wearers in the original Start Trek series.


Potioncat:
Oh, yeah. Crewman #4. 

Actually, that's a lot for such an umimportant character. It could be 
important if, say, Harry goes to a meeting and we see her there. We 
would know--but Harry wouldn't--that Snape had lied to the Black 
sisters.

Funny, this line is taking on much more importance than it did the 
first time we found out there was a discrepancy. Am I the only one 
who thinks it's less important now?

Do we know if there has ever been a change that turned out to be 
important to the plot before? (other than wand order?)

Potioncat, having a sudden urge to watch "Galaxy Quest."