Delete party number can cause empty owner
Here is the steps to reproduce the bug:
1) In onwer page, click add button and party page will be shown. In party page
(owner details)chose "select from different data package". Chose a owner in
that page. Click ok and ok, in owner page, there is one record.
2) Repeat the first step and get two records in owner page.
3) Delete one record in owner page
4) Click add button in owner page and party page will be shown again. Click
the combox and find the deleted record still be there(this is not problem).
Choose the deleted party and the party details will be shown. Click ok button
and go back the owner page
5) In the owner page, you will found the party column is empty for the record
which you added from a deleted one.
This is not a critical bug.