I have a navigation form I am using, and many of the navigation subforms have combo boxes which limit selections or query information based on previously entered values. In particular, I have a dynamic query set up that reads a 'from' and a 'to' date (unbound date picker fields) and queries the records in between those two dates for display on the same form. Last night I changed the overall layout of the navigation form (how it looks only), but didn't modify any of the queries, add any new items or change relationships in any way. Today, no matter what I do, those dynamic queries will not read the value from those date fields. If I manually enter the information, the query runs fine. Can anyone point me in the direction to figure out how this happened or where to go to investigate further?