many high runes are dupes, if u dont want them to dissapear, perm them(i dont know how, should ask sum1 that knows) of u shouldve put it ina your 3 sock armor if u had.
should ask sum1 that knows more than me, im a nub to perming itamz. i got sum dupes of a friend in start of .09, and u dudnt touch em and they didnt dissapear until i started using em on my char on .10
masterty like rebel said alot of the runes are duped the best way to try and keep them is put them on a char/account that never really gets used till you are going to use them as a runeword or such.