[CQ-Contest] End of contest and rewriting log

[rob beaudoin]

OK this is a legitimate concern of mine.
KA1QQQ  has a fast run of station going  KX1XYZ calls
him......He gets loged as KA1XYX In logging next qso he notices
previous qso should of been KX1XYZ..  Many stations
are calling and he just jots down on paper  #305  KX1XYZ  latter
KZ6XXX  calls and gets loged as zone 3.
 Then operator says darn he said zone 5.
So jots down on paper   #409   zone 5.
Latter station calls and gives him name John in hastes  he gets 
loged as Jim. Operator  says darn he said John.  operator jots down
on paper # 455  John.  23:59:59 contest is over.  Operator  looks at 
a dozen or so paper notes and makes all corrections.
Is this OK ?   You say no ....   how about this at 23:45 operator
stops contest and makes all corrections in a few minutes,
now is it ok? I do not  know it for a fact, but believe
this is a common practice.  Would this be considered
rewriting or masageing  your  log ??
BoB WA1FCN