Break point is did not work in GeneralJournalEntry table insert() method during PO invoice posting.

Hi Experts

In AX 2012 r3,

I have overridded insert method of the GeneralJournalEntry table and kept the break point. during Purchase order invoice posting records are created in the GeneralJournalEntry table but breakpoint is not hitting. When I am posting payment journal break point is worked. So i wanted to check voucher transactions during PO invoice posting. can anyone help me how can check that in which class i can put break point and check ?

Thank you in advance

Guru