Relationship problems using Web

I am experiencing a problem with Filemaker Pro 6 (Unlimited copy)for a Web Server.

At the moment I am loading details using a website into a database. I am experiencing a problem only with one area of the website.

I currently select,( e.g. a contact name), from a drop down value list and the details,( e.g. the contacts address/phonenumber/faxnumber/emailaddress), are loaded automatically from another database named 'Contacts' using the relationship option into respective fields. This works perfectly and there is no problem with the data contained in each record in the database.

On the website all the fields show up correctly.

The problem is that when the database is closed and re-opened the fields still contain all the correct details but on the website the drop-down lists do not show the details in them , whereas other drop-down lists, without relationships, show the correct information. The problem can be temporarily fixed by returning the field back to a standard field and re-attaching the value list associated witht the particular field.

As we have a feature that automatically Open's and Close's databases every day for re-calulating the 'Today Calculation' it has become an issue that numerous value-lists have to be manually re-attached.

Can anyone please help?