Bill in Arrears/Advance????

 Hi,

with bill in arrears and accounting rule getting following:

1. One A/R invoice of 12000

2. Bill in Arrears is selected.

3. Accounting rule of variable is selected and provided 12 months spread.

4. The accounting entries in current month are touching Receivable (12000), Unbilled Receivable (11000), Revenue (1000)

5. subsequent 11 months entries are movement from unbilled receivable to revenue.

NO QUESTION HERE.

With bill in advance

1.    One A/R invoice of 12000

2.    Bill in advance is selected

3.    Accounting rule of variable is selected and provided 12 months spread

4.    The accounting entries in current month are touching Receivable (12000), and unearned revenue (12000)

HERE IS THE QUESTION:

1.    In current month; why the unearned revenue is 12000 instead of 11000 and 1000 Revenue?