I maintained the same configuration of standard data flow from 0HR_PA_0 infosource to 0PA_C01 infocube. My transformation is a copy of the standard transformation between menctioned objects.
If I delete transformation rules that assign value to 0FISCPER, 0FISCPER3 and 0FISCYEAR, issue disappear. In this scenario, amount of transferred records is the same as added ones.
But if I activate transformation rules for new time characteristics, records get duplicated.
Regards,
Ana