There is a new version v1.9 of FTRestore available for download. This release adds the DVCODE column to the Chirp CSV import file layout that was added to Chirp subsequent to FTRestore v1.8 being released.
You can download the software from the FTRestore page, or by selecting the Check for Updates… item on the Help menu if you have a previous version of FTRestore installed as well.
The documentation has been updated as version 1.9.0.2.