Acronis True Image won't recognize backup versions from old computer

I have just gotten a new computer. I had been backing up data on my old computer with Acronis Ttrue Image for WD (upgraded from previous WD backup software). I now have True Image set up on my new computer, with the backup config from my old computer imported. But when I tried to restore the backed up data from my external storage medium (MyPassport), it told me to make a backup before I could recover data. I have no data on my new computer to back up yet, so how can I restore the data on my MyPassport drive?

Please refer to the following KB article: Acronis True Image for Western Digital File Backup and Restore to a WD DAS