Subforms No Longer Behaving

I am looking for some assistance with my subforms in my application.

This problem is spread throughout the application since I started moving my
users to Access 2003 (sp3 with latest hotfix). I have an ADP that was
created in 2000 attached to a large multi tabled SQL 2000 that runs my
patient database, billing, insurance, medicating and medical testing.

My problem is that under Access 2000, the Master Forms that I have with one
Subform with 3 linked parent/child fields (patient ID#, program ID, InsNo)
will auto update and show the filtered records in the subform (the subform's
record source is additionally based on a Select SQL statement). Now under
Access 2003 the subforms do not automatically update and requires much
"prodding" to show the records. The "prodding" refers to having to force a
refresh on the subform (a command button I built into the form) and
reselecting one or more of the Parent/Child fields repeatedly.

When the records show, we are normally updating those records which is why I
am using the Select Statement rather than a SQL view which might behave
better than a fussy child. Does anyone have suggestions on corrections for
this so I can move on to other upgrades and annoyances? Any help would be
greatly appreciated... I havent much more hair to pull out over this!
--
Jayson B.