Hey Eric, Kick-starts are import only, they cannot update an object. However, what you *can* do is remove a custom form (category) from an issue, and re-add it via a kick-start, with the appropriate data. Custom fields are always referenced in reports, views, filters, and kick-starts with the DE: designation. Hopefully you got this working. Our consulting team is pretty good with Kick-starts, Jason Webre and Tony Messam specifically come to my mind (granted I work with them both on Tier 1 4+ years ago, so I know them well). Michael, I would ask you to contact our Support team via our Customer Care team, and upload your file to the support ticket for us to review. If needed, our Tier 1 team will work with one of our support folks that know kick-starts. Usually that error means that the first row has something in it that doesn't align with the data from that column, a special character seems to be a common issue. Thanks, Dustin Martin Tier 2 Assigned Support Engineer Workfront