It does make sens, and I suspected you asked
A normal behavior is he way you describe and you want to achieve...
Thisis indeed the purpose of "Enable resuming" + SCORM tracking mode from the main page of the LO.
I'm here talking about XOT !
So far I didn't manage yet to have it properly working under my platform (I'm using Chamilo), but I read in the forum that people managed to achieve it under Moodle...
I'm not really prepared to change from Chamilo to moodle.. So I'm still investigating and who knows, maybe one day I'll manage to have it working ????
I hope this helps !
Please note that when you publish your LO, depending on the SCORM version and the mode (HTML5..) the tracking can vary !