PO quantity under shipments --> Distributions --> Project tab

All

We are on 12.2.4 and seeing that whenever we enter a line (goods) with quantity on the Purchase order, we see that the same quantity is populated under the field as below

Shipments --> Distributions --> Project TAB --> Quantity

Neither the Purchase order nor the ship to Org is a Project enabled org, we don't recollect seeing this in 11i earlier, is there a way we can avoid this.

The problem that we are facing is that it is getting reflected on our custom PO document

Any ideas?

Thanks

JM