Importing HHs -> does HM identifiy identic HHs and cancel those?

[DaMay85]

I got a question.
Importing a lot of Hand Historys at once needs a lot of time. lets say 200k HHs for pokerstars take 4 hours.

If I want to import now another 300k HHs and some of those 300k and 200k are identic, does HM recognize that, not import them and skip those in order to safe time? (e.g. in those 300k are 100k clones of the 200k ones. So there are 200k new HHs. does he only import the 200k new ones and will also take 4hours as if it would be 200k total and not 300k)

Regards,
Daniel

[Drzapperrr]

Yeah he notice duplicate hands and dont import them.