bizarre searching problem

[mlindal]

I have an FXPhp solution that works well except in one situation.

We have 6 centres that produce publications. IL01, IL02, IL03, IL04, IL05, IL06

When I search for publications produced by ILO4 the search finds no records.

But, when I remove the sort param (yearofpublication) 'descend', the searching works. And if I change the sort param to 'ascend' it works.

When I check the FM databases, although the PHP says no records found (ie search['foundcount']), the filemaker databases show 3000+ records in the found count.

Any ideas why in this one little situation it doesn't work?