I just upgraded to arc 10.5. I have a geodatabase that has 4527 records. When I open the database it shows a record count of 4527. If I do anything (such as a sort) the record count changes to 3539. I reopened it and selected all the records and then did a sort and got this resultSame thing happens in catalog. On opening the geodatabase I see all the records. After any operation (sorting) 888 records disappear.
What is going on?? Do I need to do something to upgrade the gdb??