Hi Eliot,
I’ve found and successfully configured the options for skipping corrupt and parsing archives but I don’t see an option that will populate the Input file or directory field, which I need to be “*.xml, *.dita,*.ditamap”.
Did you already try to enter this string in the "File patterns (separated by commas)" text field in the first tab of the Database Creation dialog?
As indicated by Bridger, this input should trigger a SET CREATEFILTER "*.xml, *.dita,*.ditamap" command, as you can see in the Info panel after having created your database.
Best, Christian