In mass additions were imported lines which should not be imported

Hello!

We have Oracle Applications : 12.1.3

We have situation when in mass additions were imported lines which should not be imported.
We created Purchase Order with inventoy item in lines and inventory distribution type.
In charge Accounts field we have natural accounts from asset category.
After we did receipts and then we created invoice in Oracle Payables. Account in distributions was tooken from Clearing Account field.
in Receiving Options form.  This accounts did not assign for any categories in Fixed Assets. But this lines from invoice was imported to mass additions. Can you explain me why this lines imported to mass additions? Is this bug?