Rejected PO directly gets approved on submission

 I raised a requisition approved it and then raised a PO. I approved the PO. The final approver rejected the PO.
After changing the price I again submitted the PO for approval
This revised submission directly approves the PO instead of submitting it into the Hierarchy for approval

Anyone knows about any patch for this.

There exists a patch for requisition for the same process described above.

Any help appreciated

Thanks
Ninad