Under Manage Sets > Plugin Options, a series of Data Copy Plug-in Options sets have a long number in their name:
The format shows the set name followed by a long number: <set name> - <random number>
Trying to delete these sets results in the following pop-up error message:
Failed to delete any sets
Error: Failed to delete the set from database: Job(s) are using set.
What are these sets and how can we remove them?