PokerTracker

In the last 2 sessions, playing ipoker and everest cash games at the same time, I do not have the same number of hands showing in the hands and the general tabs. The hands tab seems to have all hands, while about 1/4 is missing in the general tab.

Do you have an alias set?
There is a problem with importing hands to the secondary alias/player ID which can mean hands don't show up properly - they should all be there though (as you can see on the hands tab). Unaliasing should cause them all to show again.
I think this may be caused by creating an alias while an import is running - did you maybe do that?

ipoker and everest are alias of my original poker account on pokerstars. The aliases were created while converting PT 2 DB if i remember well.

Try unaliasing, and re-alias while NOT importing. If you see a similar problem again after that please report it. thanks.