Weird output with associated field

[Boaz Bezborodko]

I'm having trouble with a report.  I'm re-running an accounting report 
that someone ran a week and a half ago, but I'm getting a strange 
result.  One of the items in an associated field is not being printed.

Each record can store a few GL numbers in associated fields A1.  The 
report selects the records by invoice date and sorts them by A1.  The 
report that was run over a week ago seems to have everything correct, 
but the report I'm running today has the associated field missing on 
just one record.  Other records with associated fields print out properly.

I have the exact same problem with 3 other records that are exactly the 
same in different months.  (They are monthly insurance payments 
allocated to two different GL #s.)  For some reason the second 
associated field on them also don't appear on the reports for their 
respective months. 

The records haven't been touched in between the runs and the only change 
was indexing the selection to speed it up.  But the records are 
definitely getting selected since the first associated field appears on 
the file.  And the report is definitely printing associated fields since 
other records with entries in the multiple associated fields are 
displaying correctly.

What is causing this and how do I fix it?

Boaz