Well whatever you did it was within the last week, because both the
Custom set and the
Custom Facts set define your new
Outdoor Relief fact that was only added on Monday 30 October as stated in
Outdoor Relief Fact (15386).
So perhaps you have used the
Fact Sets... button shown in your screenshot, and then the
Clone button to create the duplicate set with a new name.
The only other mechanism would the
File > Import/Export > Export > Fact Set > Custom Fact Set command, rename of the file, and then use
File > Import/Export > Export > Fact Set but that seems very unlikely.
However, I suggest you review each fact definition in both Fact Sets, and if they are identical delete the one you don't want.
To do that, click the
Facts Sets... button, carefully select the set you don't want, and click the
Delete button.
BTW:
The best way to save settings such as those for backup is to use the
Backup and Restore Family Historian Settings Plugin, as it does everything all in one go, including settings in the
Windows Registry that mostly cannot be exported using
FH.