Budget hold qty release

Hi,

I am facing one issue with budget hold code. There is one order where for 2 lines having some qty is on budget hold. In PO of version from where order created, budget options are blank. Client do not use budget approval so no budget approval route is defined. There is no B1 hold code for the same. Thats why i am not sure how qty went on budget hold. Just what i got some info from user is its modified order line where qty increased.

I tried to find some documents on oracle support but not exactly related i found.