How can I get the input file modify date to be used in logic for process logic?
You want to extract a date from your data file and then modify its format for further processing, is that right?
I read that you can use the Folder Listing Plugin within Workflow to grab a files date modified and put it in a XML file. From there you could use Workflow to pass that info to your template. I have not attempted this tho but I’m sure it is all possible.