ME53N status tab Issue

Dear Gurus,

We are facing an Issue related to status tab of PR.

User created a PO with ME21N with reference to PR, then in PR status tab PO number got updated.

Actual requirement is to create Scheduling Agreement for that PR, So User deleted that PO and Created a Scheduling Agreement with reference to PR.

(SA > Item > Statistics > General > PR number updated)

Now in status tab, Scheduling Agreement not getting updated. showing PO with deletion indicator.

In ME5A report and EBAN table, deleted PO number is showing in purchase order field.

Is this standard behavior? Please help us to rectify this Issue.

Thanks.