System-maintained field weirdness

[Jean-Pierre A. Radley]

Ken Brody propounded (on Fri, Oct 19, 2007 at 02:51:40PM -0400):
| Quoting Jean-Pierre A. Radley (Fri, 19 Oct 2007 14:39:41 -0400):
| 
| > On a system running filePro 04.05.08, I am trying to track down why a
| > certain file occasionally has duplicate records.  One oddity is that
| > the duplicates will have proper and logical @cb, @cd, and @ub values
| > but @ud is blank.
| >
| > What could cause this?
| 
| My first thought would be:
| 
| Creating the records via lookup-free in *report, and never updating
| them after the initial creation?

OK, records are in fact created by a lookup-free.

Am I right in recalling that IFF a record has never been updated,
THEN @ub and @ud still get values, namely those in @cb and @cd?

IAC, why would @ub have a value, but not @ud?

-- 
JP