I play on winamax GoFast tables (Zoom with antes added by winamax). I always remark that few hands misses on import at the end of the session.
But, I recently realize that more and more hands are not imported (disappear at all ?).
Here are screen shots of winamax software vs H2N.
Session 1
Session 2
I also realize that H2N understand that theses hands are counted in "Fast" and "normal" way.
I didn't find any answer on other forum (even french one) or FAQ of H2N.