Replaced hard two "Volumes" in My Backup

A few years ago the system drive in my laptop started throwing read errors and I was able to evacuate to a new drive using IIRC the WD Acronis tool. Today I was exploring the contents of My Book and noticed there are what appears to be two different “backup sets” labelled “Volume…”+GUID. One is clearly out of date and I assume is from the old failing drive. Is it OK to just delete the older folder?