Marc:If your field has a display picture clause, then you can detect if it formatted correctly by looking at field.formattedValueSpecifically, if the value cannot be formatted, the formattedValue will be the same as the rawValue (unformatted).So a validation script that specifies:this.formattedValue...

By default, importing a second data file will overwrite the data already in the form.There are a couple workarounds, but will require some advanced form design.  I have a blog entry that discusses the topic:http://blogs.adobe.com/formfeed/2009/11/working_with_multiple_datasets.htmlgood luck.  John