P4310 - E1 9.0 vs 9.2

Hello,

We just upgraded to 9.2 from 9.0 .

I have a user that is stating that she was able to  do the following in 9.0 and can not do the same steps in 9.2.

Here are her steps:

1) Create the po line with a "Stock" item number , and then go to the next po line

2) Go back and to the previous line and change the ITEM number   PRIOR to saving the PO .

9.2 is not allowing  the user to go back and change the ITEM number  since this field is greyed out.

Are there any processing options that control this?

Non stock items have no issues ...