Firmware: v.4.3.26
UI: v.4.2.30
The only pending updates are for the remotes and motion sensor, as expected. The PLM is the original, which is close to 4 years old. Been lucky with that, I think.
This started about a year ago, when I restored all devices from the file menu. After that, when I try to restore a single device, ISY restores all devices.