After upgrading to 15.2, we notice that policy column in the iconsole for custom policies contains numbers rather than their actual name.
Even as numbers the Policy will still be coming up fine in standard search.
Check for "ClassName" Column value in "Wgn3ClassificationI18N" table for this particular policy ID i.e 400001.
If the value in "classname" column is blank then it will display the '<PlicyID>'. It may be due to not properly creating the custom Policy.
To make the events policy sync with the events it need to be mapped properly to the below mentioned tables.
The tables involved are:- WGN3STRINGI18N,WGN3CLASSIFICATIONnode,WGN3CLASSIFICATIONI18N,WGN3CLASSIFICATIONBASE,WGN3RESOURCE.