Auto Update of Form

I have a form in a Zoho application that is only used for information i.e. no updates are done in Zoho. The data is kept in another application. I have had the application export a .tsv file of the data needed in Zoho, and when I delete all records and import the .tsv file, it works perfectly. The client wants to automate this.
Is there any way to have a Deluge script that runs say at midnight to delete data in the form, then import from a file?

Maany thanks